2026 PEMF Buyers Guide - Abridged Version
15 Points Critical Points To Look for When Shopping for PEMF therapy device
15 Points Critical Points To Look for When Shopping for PEMF therapy device
Introduction
Pulsed Electromagnetic Field (PEMF) therapy has experienced a surge in popularity over the past two decades, in part due to mainstream exposure, including a 2011 Dr. Oz Show feature highlighting it as a breakthrough in pain management. Its appeal lies in its ability to support the body’s natural healing processes—enhancing cellular energy, improving circulation, reducing pain and inflammation, and promoting tissue regeneration and recovery. Unlike static magnets, PEMF devices create pulsing, oscillating magnetic fields that interact dynamically with the body at a cellular level, producing measurable physiological effects.
The therapeutic use of PEMF is well supported by decades of scientific research. More than 30,000 articles and thousands of controlled studies document its effects across a wide range of biological processes and conditions. PEMF therapy holds FDA approvals for multiple applications, including pain relief, bone regeneration, wound healing, urinary incontinence, and even depression and anxiety. NASA’s own studies have demonstrated PEMF’s ability to promote tissue repair, accelerate bone healing, and stimulate stem cell growth—further validating its clinical significance.
Pulsed Electromagnetic Field (PEMF) therapy has experienced a surge in popularity over the past two decades, in part due to mainstream exposure, including a 2011 Dr. Oz Show feature highlighting it as a breakthrough in pain management. Its appeal lies in its ability to support the body’s natural healing processes—enhancing cellular energy, improving circulation, reducing pain and inflammation, and promoting tissue regeneration and recovery. Unlike static magnets, PEMF devices create pulsing, oscillating magnetic fields that interact dynamically with the body at a cellular level, producing measurable physiological effects.
The therapeutic use of PEMF is well supported by decades of scientific research. More than 30,000 articles and thousands of controlled studies document its effects across a wide range of biological processes and conditions. PEMF therapy holds FDA approvals for multiple applications, including pain relief, bone regeneration, wound healing, urinary incontinence, and even depression and anxiety. NASA’s own studies have demonstrated PEMF’s ability to promote tissue repair, accelerate bone healing, and stimulate stem cell growth—further validating its clinical significance.
The Basic Science Behind PEMF - Ampere’s Law and Faraday’s Law
Understanding the science behind PEMF begins with two fundamental principles of physics: Ampere’s Law and Faraday’s Law. Ampere’s Law states that an electric current passing through a wire generates a magnetic field around it. When the wire is shaped into a loop, its magnetic field lines align and reinforce one another, creating a North–South pole magnetic field similar to that of a bar magnet. This is the foundation of how PEMF devices generate therapeutic magnetic fields.
Understanding the science behind PEMF begins with two fundamental principles of physics: Ampere’s Law and Faraday’s Law. Ampere’s Law states that an electric current passing through a wire generates a magnetic field around it. When the wire is shaped into a loop, its magnetic field lines align and reinforce one another, creating a North–South pole magnetic field similar to that of a bar magnet. This is the foundation of how PEMF devices generate therapeutic magnetic fields.
|
|
What distinguishes PEMF therapy from static magnets is that PEMF signals pulse, vary, or oscillate over time—using waveforms such as square, sine, or sawtooth waves. While magnetic field strength (measured in Gauss or Tesla) is often emphasized by marketers, it is not the most accurate indicator of PEMF effectiveness. Instead, Faraday’s Law provides the true measure of PEMF’s therapeutic potential. It states that a changing magnetic field induces an electromotive force (EMF) that can drive current through a conductor, including the human body, which is an excellent electrical conductor.
The speed at which the magnetic field rises and falls—the “pulse” in PEMF—is what determines how much energy is transferred into the body. Faster, more abrupt pulses (like square waves) generate more EMF and deliver greater cellular stimulation than slower-rising waves. This rate of change is measured as the Slew Rate, widely regarded as the most critical parameter for PEMF device performance. A device with an optimized slew rate maximizes energy delivery and cellular response, making it a key factor to consider before investing in any PEMF system.
The speed at which the magnetic field rises and falls—the “pulse” in PEMF—is what determines how much energy is transferred into the body. Faster, more abrupt pulses (like square waves) generate more EMF and deliver greater cellular stimulation than slower-rising waves. This rate of change is measured as the Slew Rate, widely regarded as the most critical parameter for PEMF device performance. A device with an optimized slew rate maximizes energy delivery and cellular response, making it a key factor to consider before investing in any PEMF system.
Point #1: Devices with Research-Proven Slew Rates
The slew rate is the single most important parameter in PEMF therapy, describing how quickly the magnetic field reaches its peak intensity. According to Faraday’s Law, the slew rate—measured in Tesla/second (T/s) or Gauss/second (G/s)—determines how much energy is transferred to the body. A faster rise time produces a steeper slope on the signal waveform, resulting in more energy delivered to cells and tissues. This high-slew-rate (HSR) energy transfer acts like a full-body “battery charger,” driving ions across cell membranes, restoring cellular voltage, and boosting mitochondrial ATP production. These effects mimic exercise at the cellular level, improve circulation, reduce pain and inflammation, and stimulate repair and regeneration throughout the body.
The slew rate is the single most important parameter in PEMF therapy, describing how quickly the magnetic field reaches its peak intensity. According to Faraday’s Law, the slew rate—measured in Tesla/second (T/s) or Gauss/second (G/s)—determines how much energy is transferred to the body. A faster rise time produces a steeper slope on the signal waveform, resulting in more energy delivered to cells and tissues. This high-slew-rate (HSR) energy transfer acts like a full-body “battery charger,” driving ions across cell membranes, restoring cellular voltage, and boosting mitochondrial ATP production. These effects mimic exercise at the cellular level, improve circulation, reduce pain and inflammation, and stimulate repair and regeneration throughout the body.
|
|
Quantifying the Best Slew Rates Based on 32 Successful Slew Rate Studies
[at least 15 T/s -30 T/s]
Extensive research validates the importance of optimizing slew rate. NASA’s landmark 2003 study concluded that slew rate (dB/dt) was the most critical parameter in PEMF therapy, finding that high-slew-rate signals upregulated 160 growth and regenerative genes and increased neuronal stem cell production by 400%.
Across 32 published studies, the most effective and safe “Goldilocks zone” for slew rate lies between 5 T/S and 150 T/s, with ~27.5 T/s emerging as the average across these studies and a particularly effective target. Taking it one step further, a Kernel Density Estimate (KDE) statistical analysis shows these slew rates cluster between 5 and 32 T/s, with the highest concentration around 14.5 T/s. This is the best statistical way to create a Goldilocks zone of slew rate based on these 32 Studies.
But we can do even better to maximize the range for biological effect. Robert Dennis's rabbit bone study [18] shows why 10.0 T/s delivers a clear performance leap over the 5.0 T/s floor—proving that moving away from the wall increases biological output. Also, the Li/Androjna peak-efficiency trials across many clinical studies showed that 30.0 T/s outperformed 10 T/s [20,22,23]. This brings the performance primary sweet spot to between 15 to 30 T/s.
Furthermore, studies that used slew rates below the cellular noise floor (2.5 T/s) often fail to produce measurable results [33], while excessively high rates (>200 T/s) can be more harmful than helpful, as safety standards from the IEC and IEEE cap the maximum at 200 T/S [34].
For buyers, this means prioritizing research-proven slew rate over just frequency or magnetic field strength when selecting a PEMF device. A device with a slew rate of 5-32 T/s maximizes energy transfer, cellular stimulation, and overall therapeutic outcomes. Even better is 15 -30 T/s. This parameter is the best predictor of whether a PEMF device can deliver meaningful results for healing, recovery, and long-term health. Sadly, there are very few PEMF full-body mats that even get past the 2.5 T/s noise floor!
[at least 15 T/s -30 T/s]
Extensive research validates the importance of optimizing slew rate. NASA’s landmark 2003 study concluded that slew rate (dB/dt) was the most critical parameter in PEMF therapy, finding that high-slew-rate signals upregulated 160 growth and regenerative genes and increased neuronal stem cell production by 400%.
Across 32 published studies, the most effective and safe “Goldilocks zone” for slew rate lies between 5 T/S and 150 T/s, with ~27.5 T/s emerging as the average across these studies and a particularly effective target. Taking it one step further, a Kernel Density Estimate (KDE) statistical analysis shows these slew rates cluster between 5 and 32 T/s, with the highest concentration around 14.5 T/s. This is the best statistical way to create a Goldilocks zone of slew rate based on these 32 Studies.
But we can do even better to maximize the range for biological effect. Robert Dennis's rabbit bone study [18] shows why 10.0 T/s delivers a clear performance leap over the 5.0 T/s floor—proving that moving away from the wall increases biological output. Also, the Li/Androjna peak-efficiency trials across many clinical studies showed that 30.0 T/s outperformed 10 T/s [20,22,23]. This brings the performance primary sweet spot to between 15 to 30 T/s.
Furthermore, studies that used slew rates below the cellular noise floor (2.5 T/s) often fail to produce measurable results [33], while excessively high rates (>200 T/s) can be more harmful than helpful, as safety standards from the IEC and IEEE cap the maximum at 200 T/S [34].
For buyers, this means prioritizing research-proven slew rate over just frequency or magnetic field strength when selecting a PEMF device. A device with a slew rate of 5-32 T/s maximizes energy transfer, cellular stimulation, and overall therapeutic outcomes. Even better is 15 -30 T/s. This parameter is the best predictor of whether a PEMF device can deliver meaningful results for healing, recovery, and long-term health. Sadly, there are very few PEMF full-body mats that even get past the 2.5 T/s noise floor!
Point #2: Make sure to have a High Slew Rate Signal with the Optimal Rise Time 80-300 µs
In addition to optimizing slew rate, it is equally important to ensure that the rise time is within the ideal range for biological effectiveness. The rise time is the duration during which the PEMF signal remains “on” as it rises from zero to peak intensity. For a given magnetic field strength, shorter rise times directly increase the slew rate—and therefore the energy transferred to the body (as shown in the image here).
Research shows that the most effective PEMF devices sustain their high slew rate for at least 80 microseconds (μs) to ensure enough “on” time for meaningful current induction. Pulses that are too short (nanoseconds) fail to generate adequate biological effect, while excessively long pulses—such as those in low-frequency sine wave devices—are slow, inefficient, and less therapeutic [35,36].
But the problem with most PEMF devices we tested is that their rise times are way too slow. Pioneering research by Arthur Pillar showed that the maximum rise time for an optimal cellular response is 300 μs. This is because 300 μs is the upper limit of a signal being brief enough to pierce the cell’s capacitive armor [37]. Sadly, only 4 PEMF devices we tested had rise times within these therapeutic ranges. Most PEMF devices use slow and "mushy" rise times that allow the cell membrane to ground out the signal, deadening the biological command before the work can ever begin.
Research shows that the most effective PEMF devices sustain their high slew rate for at least 80 microseconds (μs) to ensure enough “on” time for meaningful current induction. Pulses that are too short (nanoseconds) fail to generate adequate biological effect, while excessively long pulses—such as those in low-frequency sine wave devices—are slow, inefficient, and less therapeutic [35,36].
But the problem with most PEMF devices we tested is that their rise times are way too slow. Pioneering research by Arthur Pillar showed that the maximum rise time for an optimal cellular response is 300 μs. This is because 300 μs is the upper limit of a signal being brief enough to pierce the cell’s capacitive armor [37]. Sadly, only 4 PEMF devices we tested had rise times within these therapeutic ranges. Most PEMF devices use slow and "mushy" rise times that allow the cell membrane to ground out the signal, deadening the biological command before the work can ever begin.
Point #3: Make sure to get a PEMF device with Coils on a Full Body Mat that cover a large AREA ACROSS the whole body!
While slew rate defines the energy delivered by a PEMF signal, the coil design determines how much of the body that energy reaches and how deeply it penetrates. Coils act like the “speakers” of a PEMF device, broadcasting the pulsed magnetic field across the body. High-quality, properly engineered coils are essential for ensuring even energy distribution without “hot” or “dead” spots, making them the second-most important factor when choosing a PEMF system. Devices with small or poorly spaced coils often fail to deliver uniform coverage or meaningful penetration, compromising results.
For optimal therapy, a full-body mat with large, well-engineered coils is strongly recommended. The human body is a highly interconnected system with circulatory, lymphatic, nervous, and meridian networks running from head to toe. A mat that covers the entire body helps activate these networks, recharge all 40 trillion cells, and support systemic healing. Even when addressing a localized injury, such as a broken ankle, starting with full-body PEMF sessions ensures that oxygen, nutrients, and immune factors can reach the injured area efficiently before focusing treatment with a local applicator.
First, we want to make sure there is enough coil area to cover the whole body (The average person's silhouette area is around 750 in²) AND that the energy is evenly distributed across the coils.
Sadly, most companies have full-body mats with a low coil area and use coils that are too small and/or spaced too far apart. This leads to poor coverage and hot and cold spots. Some companies try to boast that they have a lot of coils when, in reality, they are small coils with too much dead space and/or insufficient coverage area. A few companies may have large coils, but they are not properly engineered, so they don't distribute the pulsing magnetic field evenly (there is a hot spot on top of the coil and a dead spot in the middle if they are too large).
First, we want to make sure there is enough coil area to cover the whole body (The average person's silhouette area is around 750 in²) AND that the energy is evenly distributed across the coils.
Sadly, most companies have full-body mats with a low coil area and use coils that are too small and/or spaced too far apart. This leads to poor coverage and hot and cold spots. Some companies try to boast that they have a lot of coils when, in reality, they are small coils with too much dead space and/or insufficient coverage area. A few companies may have large coils, but they are not properly engineered, so they don't distribute the pulsing magnetic field evenly (there is a hot spot on top of the coil and a dead spot in the middle if they are too large).
Point #4: Make sure to get a PEMF device with large enough coils and sufficient slew rates to have a deep enough penetration into the body.
The 2nd aspect that coils dictate is penetration depth. Because the average person is 7-10 inches thick, you need a device with penetrating coils so the energy gets deep into the body! Many health conditions are several inches in, so this is critically important.
For PEMF, the penetration depth (the engineering gold standard to measure penetration) is the distance above the mat at which the field drops to about 37% (1/e). For PEMF, the penetration depth depends on the SIZE of the PEMF coil! This follows from the Biot-Savart law, which shows that the penetration depth is approximately the inner radius of the coil used (0.97 × Radius ≈ Radius). So you can see that larger coils have greater penetration due to the larger radius. Note: The inner radius is the radius of hole in the center of each coil (see below).
A large coil will have a larger dome or hemisphere of energy above it, resulting in deeper penetration. Bigger coils at the same given intensity have a deeper penetration depth than smaller coils. If you compare the coil sizes of the popular PEMF devices, you can see that the penetration depth matches the coil size! Note: The penetration depth numbers on this chart are measured values, confirmed by calculations, so they are very accurate!
For PEMF, the penetration depth (the engineering gold standard to measure penetration) is the distance above the mat at which the field drops to about 37% (1/e). For PEMF, the penetration depth depends on the SIZE of the PEMF coil! This follows from the Biot-Savart law, which shows that the penetration depth is approximately the inner radius of the coil used (0.97 × Radius ≈ Radius). So you can see that larger coils have greater penetration due to the larger radius. Note: The inner radius is the radius of hole in the center of each coil (see below).
A large coil will have a larger dome or hemisphere of energy above it, resulting in deeper penetration. Bigger coils at the same given intensity have a deeper penetration depth than smaller coils. If you compare the coil sizes of the popular PEMF devices, you can see that the penetration depth matches the coil size! Note: The penetration depth numbers on this chart are measured values, confirmed by calculations, so they are very accurate!
Point #5 Optimal Intensity Range (1 mT - 10 mT):
While slew rate is king in PEMF therapy, intensity does matter, but in a much lesser role. However, because many PEMF studies do not report the slew rate, we can use intensity as a proxy (along with the reported signal shape, like a good square wave or sawtooth).
Robust evidence on the optimal intensity for PEMF comes from a meta-analysis of 3249 PEMF experiments and 92 publications over 20 years (1999-2019) [2]. One key takeaway is that a vast majority of successful PEMF studies reporting intensity (73.7%) used intensities between 10 and 100 gauss. Also, based on this meta-analysis, 20.5% of the PEMF studies fell within the low-intensity range (<1 mT or 10 gauss). High-intensity (> 100 mT or 1000 gauss) had the LEAST amount of research supporting it (only 3.8% of the studies were high-intensity) compared to low- and medium-intensity systems [38].
It turns out that when you have a medium-intensity device (10-100 Gauss) with a fast rise time (80-300 µs), you find that when you do the math, you get a perfect range of slew rates backed by research. So, knowing the best slew rates and rise times, the intensity MUST be in the medium-intensity range, and research (and simple math) supports this!
Further evidence supporting medium intensity comes from the same study, which reveals that medium-intensity studies show a significantly greater positive cellular response than both high- and low-intensity studies (See chart below) [38]. That is, medium-intensity PEMF signals are the optimal intensities for triggering, at the cellular level, all the primary benefits of PEMF. Examples of cellular responses observed in research include gene and protein expression, healthy cell proliferation, cell differentiation, cell viability (cell health), and triggering signal transduction pathways [2].
While slew rate is king in PEMF therapy, intensity does matter, but in a much lesser role. However, because many PEMF studies do not report the slew rate, we can use intensity as a proxy (along with the reported signal shape, like a good square wave or sawtooth).
Robust evidence on the optimal intensity for PEMF comes from a meta-analysis of 3249 PEMF experiments and 92 publications over 20 years (1999-2019) [2]. One key takeaway is that a vast majority of successful PEMF studies reporting intensity (73.7%) used intensities between 10 and 100 gauss. Also, based on this meta-analysis, 20.5% of the PEMF studies fell within the low-intensity range (<1 mT or 10 gauss). High-intensity (> 100 mT or 1000 gauss) had the LEAST amount of research supporting it (only 3.8% of the studies were high-intensity) compared to low- and medium-intensity systems [38].
It turns out that when you have a medium-intensity device (10-100 Gauss) with a fast rise time (80-300 µs), you find that when you do the math, you get a perfect range of slew rates backed by research. So, knowing the best slew rates and rise times, the intensity MUST be in the medium-intensity range, and research (and simple math) supports this!
Further evidence supporting medium intensity comes from the same study, which reveals that medium-intensity studies show a significantly greater positive cellular response than both high- and low-intensity studies (See chart below) [38]. That is, medium-intensity PEMF signals are the optimal intensities for triggering, at the cellular level, all the primary benefits of PEMF. Examples of cellular responses observed in research include gene and protein expression, healthy cell proliferation, cell differentiation, cell viability (cell health), and triggering signal transduction pathways [2].
|
|
Intensity in PEMF – Myths of High Intensity PEMF
While intensity (Gauss) is often the most heavily marketed feature of PEMF devices, research shows that high intensity is neither necessary nor optimal for healing. In fact, therapeutic slew rate—and not intensity—is the most important parameter for effectiveness. Medium intensities in the range of 1–10 mT (10–100 Gauss) are sufficient to achieve clinically proven slew rates and are supported by most published studies. High-intensity devices may deliver rapid analgesic effects, muscle stimulation, and a small handful of other conditions, but they are often inefficient, overpriced, and less effective at promoting long-term tissue regeneration and repair than devices in the medium-intensity range. And high intensity should ONLY be used every now and then; absolutely don't use it daily, as it exceeds IEC, IEEE, and ICNIRP safety levels.
Many common claims made by high-intensity PEMF promoters are myths. The so-called “inverse square law” argument for more power is flawed because penetration depth is determined by coil size, not simply intensity (leading to recommendation errors upwards to 10,000%!). Likewise, the belief that “more is better” ignores the biphasic dose response seen in PEMF research, where too much intensity can actually inhibit healing. Meta-analyses confirm that most successful PEMF studies use medium intensities, with very few using >1000 Gauss. The idea that high intensity heals faster conflates pain relief with true repair—FDA-approved bone stimulator studies have shown that lower intensities are more effective for regeneration.
Other myths include the belief that users must “feel something” for PEMF to work—subtle biological effects often take hours to manifest—and the assumption that higher cost equates to higher efficacy. In reality, research-backed, medium-intensity, high-slew-rate (15-30 T/s) PEMF devices can be far more affordable while still delivering clinically validated results. The takeaway is clear: choose a PEMF device that offers a fast rise time and an optimal slew rate within a moderate-intensity range. This “middle way” maximizes biological benefits while avoiding overstimulation and unnecessary expense.
While intensity (Gauss) is often the most heavily marketed feature of PEMF devices, research shows that high intensity is neither necessary nor optimal for healing. In fact, therapeutic slew rate—and not intensity—is the most important parameter for effectiveness. Medium intensities in the range of 1–10 mT (10–100 Gauss) are sufficient to achieve clinically proven slew rates and are supported by most published studies. High-intensity devices may deliver rapid analgesic effects, muscle stimulation, and a small handful of other conditions, but they are often inefficient, overpriced, and less effective at promoting long-term tissue regeneration and repair than devices in the medium-intensity range. And high intensity should ONLY be used every now and then; absolutely don't use it daily, as it exceeds IEC, IEEE, and ICNIRP safety levels.
Many common claims made by high-intensity PEMF promoters are myths. The so-called “inverse square law” argument for more power is flawed because penetration depth is determined by coil size, not simply intensity (leading to recommendation errors upwards to 10,000%!). Likewise, the belief that “more is better” ignores the biphasic dose response seen in PEMF research, where too much intensity can actually inhibit healing. Meta-analyses confirm that most successful PEMF studies use medium intensities, with very few using >1000 Gauss. The idea that high intensity heals faster conflates pain relief with true repair—FDA-approved bone stimulator studies have shown that lower intensities are more effective for regeneration.
Other myths include the belief that users must “feel something” for PEMF to work—subtle biological effects often take hours to manifest—and the assumption that higher cost equates to higher efficacy. In reality, research-backed, medium-intensity, high-slew-rate (15-30 T/s) PEMF devices can be far more affordable while still delivering clinically validated results. The takeaway is clear: choose a PEMF device that offers a fast rise time and an optimal slew rate within a moderate-intensity range. This “middle way” maximizes biological benefits while avoiding overstimulation and unnecessary expense.
|
|
Point #6: Webers: The Total Volume and Size of the PEMF Field (Potential Power)
Webers (Wb) measure the total magnetic flux, which represents the actual volume and capacity of the magnetic field surrounding a device's coils. In physics, the Flux in Webers (Wb) is directly related to the total potential energy stored in a magnetic field. While a standard Gauss or Tesla metric only tells you localized surface intensity, the mathematical energy proof demonstrates that the true energetic payload of a PEMF machine scales with the square of its Webers.
Because this is so important to grasp for effective PEMF, let's explain Webers without using any confusing physics math. To do this, it will be helpful to use a simple analogy: think of magnetic fields like watering a garden with a hose. Manufacturers love to brag about a metric called Tesla (or Gauss). Tesla only measures magnetic intensity at a single microscopic point—it is the equivalent of how hard the water pressure is shooting out of the very tip of the nozzle. Webers, on the other hand, measure the Total Magnetic Flux, which represents the actual total volume and size of the field. A manufacturer can build a tiny, needle-thin nozzle and shoot a blast of water with massive pressure (High Tesla). However, because the stream is microscopic, it will dry up and vanish just inches away. It completely lacks the volume to soak a large garden bed. A high-Weber device uses massive, heavy-duty copper coils to project a giant, wide column of water. The pressure feels smooth, and it pumps a massive volume of water deep into the soil. A high-Weber PEMF device ensures the magnetic field has sufficient depth and energy to deeply saturate dense bone structures and internal organs.
Visualizing Webers with a 3D "Magnetic X-Ray" Plot
To create actual "Weber plots" of 10 popular PEMF devices, over 7,500 intensity measurements were taken across 13 popular PEMF mats and above them using an accurate Hall-Effect Probe. The data was put into an MIT software program with AI to create an accurate visualization based on actual measurements. This is the first time a detailed test like this has been performed, and it provides a clear picture (like a Magnetic X-Ray) of the actual PEMF fields above a PEMF mat. Below are ten examples showing the magnetic field intensities above 40 microtesla (.4 Gauss). This threshold was selected to show the weak fields of these popular low-intensity PEMF mats. This 3D mapping visualization is a flawless, mathematically precise way to explain what total magnetic flux in Webers (Wb) means and what it actually looks like in the real world of PEMF devices.
Notice from the image that while mass-market consumer pads emit tiny, isolated 'pimples' of energy surrounded by vast, dead zones of empty space—proving their microscopic coils deliver very small total Webers—the Spectra Apex HSR projects a super-high-Weber magnetic field of flux that towers over the competition.
Webers (Wb) measure the total magnetic flux, which represents the actual volume and capacity of the magnetic field surrounding a device's coils. In physics, the Flux in Webers (Wb) is directly related to the total potential energy stored in a magnetic field. While a standard Gauss or Tesla metric only tells you localized surface intensity, the mathematical energy proof demonstrates that the true energetic payload of a PEMF machine scales with the square of its Webers.
Because this is so important to grasp for effective PEMF, let's explain Webers without using any confusing physics math. To do this, it will be helpful to use a simple analogy: think of magnetic fields like watering a garden with a hose. Manufacturers love to brag about a metric called Tesla (or Gauss). Tesla only measures magnetic intensity at a single microscopic point—it is the equivalent of how hard the water pressure is shooting out of the very tip of the nozzle. Webers, on the other hand, measure the Total Magnetic Flux, which represents the actual total volume and size of the field. A manufacturer can build a tiny, needle-thin nozzle and shoot a blast of water with massive pressure (High Tesla). However, because the stream is microscopic, it will dry up and vanish just inches away. It completely lacks the volume to soak a large garden bed. A high-Weber device uses massive, heavy-duty copper coils to project a giant, wide column of water. The pressure feels smooth, and it pumps a massive volume of water deep into the soil. A high-Weber PEMF device ensures the magnetic field has sufficient depth and energy to deeply saturate dense bone structures and internal organs.
Visualizing Webers with a 3D "Magnetic X-Ray" Plot
To create actual "Weber plots" of 10 popular PEMF devices, over 7,500 intensity measurements were taken across 13 popular PEMF mats and above them using an accurate Hall-Effect Probe. The data was put into an MIT software program with AI to create an accurate visualization based on actual measurements. This is the first time a detailed test like this has been performed, and it provides a clear picture (like a Magnetic X-Ray) of the actual PEMF fields above a PEMF mat. Below are ten examples showing the magnetic field intensities above 40 microtesla (.4 Gauss). This threshold was selected to show the weak fields of these popular low-intensity PEMF mats. This 3D mapping visualization is a flawless, mathematically precise way to explain what total magnetic flux in Webers (Wb) means and what it actually looks like in the real world of PEMF devices.
Notice from the image that while mass-market consumer pads emit tiny, isolated 'pimples' of energy surrounded by vast, dead zones of empty space—proving their microscopic coils deliver very small total Webers—the Spectra Apex HSR projects a super-high-Weber magnetic field of flux that towers over the competition.
Point #7: Webers/second (Wb/s) - The Master Number for Healing
While slew rate measures the speed of a PEMF signal at a point, the induced energy (Webers/second = Volts) is given by Faraday's law, which is the total induced voltage in the field surrounding the coils. Because one Weber per second is mathematically equivalent to one Volt, this metric serves as the true "Master Number" for healing. A high slew rate delivered over a small coil lacks the inductive work capacity to overcome cellular electrical resistance; however, when that same velocity is applied across a high-density, large-diameter copper coil, the resulting increase in Webers per second ensures a deep, systemic "Biological Spark" that reaches the marrow of the bone and the center of the joint.
Why This Speed Dictates True Cellular Healing
A magnetic field cannot heal a human cell if it just sits there or turns on lazily. To trigger cellular repair, the field must turn on with a lightning-fast, microsecond-scale whip-crack. This second 3D "Magnetic X-Ray" volumetric plot is a mathematically flawless and intuitive way to show exactly what Weber's per second (Wb/s) or induced voltage means in real-world biology. While the first chart visualized Weber (Wb), the massive potential-energy payload stored in the field volume, this chart visualizes kinetic action and velocity. It captures how quickly that field snaps on and off, which, by the unbending laws of physics, dictates the electrical pressure literally driven into a patient's cells.
When you look at this 3D map of the mats, you are seeing the electrical pressure in action. Underpowered consumer blankets like BEMER, Sedona, or HigherDose look like completely flat, low-lying, dark purple stubs. Their fields turn on so slowly and lazily (low Webers/second) that the energy leaks out too slowly to affect the body. The signal gets completely drowned out by the cell’s internal background static. The Spectra looks like a towering, explosive mountain range of bright energy, shooting into the sky. Because it has massive Webers per second (reaching a blistering 24 Tesla per second), it delivers a sharp, microsecond-scale electronic snap to your tissue. That intense velocity generates the necessary electrical pressure to punch through the cell membrane armor, physically opening the cell's internal healing gateways and triggering accelerated tissue repair.
Visualizing Webers/sec = Volts with a 3D Plot
To create actual "Weber plots" of 10 popular PEMF devices, over 7,500 intensity measurements were taken across 13 popular PEMF mats and above them using an accurate Hall-Effect Probe. The data was put into an MIT software program with AI to create an accurate visualization based on actual measurements. This is the first time a detailed test like this has been performed, and it provides a clear picture of the actual PEMF fields above a PEMF mat. Below are ten examples showing magnetic field SLEW RATES above 0.1 T/s. This threshold was selected to show the weak fields of these popular low-intensity PEMF mats. This 3D mapping visualization is a flawless, mathematically precise way to explain what total Webers/second means in the real world. Because
While slew rate measures the speed of a PEMF signal at a point, the induced energy (Webers/second = Volts) is given by Faraday's law, which is the total induced voltage in the field surrounding the coils. Because one Weber per second is mathematically equivalent to one Volt, this metric serves as the true "Master Number" for healing. A high slew rate delivered over a small coil lacks the inductive work capacity to overcome cellular electrical resistance; however, when that same velocity is applied across a high-density, large-diameter copper coil, the resulting increase in Webers per second ensures a deep, systemic "Biological Spark" that reaches the marrow of the bone and the center of the joint.
Why This Speed Dictates True Cellular Healing
A magnetic field cannot heal a human cell if it just sits there or turns on lazily. To trigger cellular repair, the field must turn on with a lightning-fast, microsecond-scale whip-crack. This second 3D "Magnetic X-Ray" volumetric plot is a mathematically flawless and intuitive way to show exactly what Weber's per second (Wb/s) or induced voltage means in real-world biology. While the first chart visualized Weber (Wb), the massive potential-energy payload stored in the field volume, this chart visualizes kinetic action and velocity. It captures how quickly that field snaps on and off, which, by the unbending laws of physics, dictates the electrical pressure literally driven into a patient's cells.
When you look at this 3D map of the mats, you are seeing the electrical pressure in action. Underpowered consumer blankets like BEMER, Sedona, or HigherDose look like completely flat, low-lying, dark purple stubs. Their fields turn on so slowly and lazily (low Webers/second) that the energy leaks out too slowly to affect the body. The signal gets completely drowned out by the cell’s internal background static. The Spectra looks like a towering, explosive mountain range of bright energy, shooting into the sky. Because it has massive Webers per second (reaching a blistering 24 Tesla per second), it delivers a sharp, microsecond-scale electronic snap to your tissue. That intense velocity generates the necessary electrical pressure to punch through the cell membrane armor, physically opening the cell's internal healing gateways and triggering accelerated tissue repair.
Visualizing Webers/sec = Volts with a 3D Plot
To create actual "Weber plots" of 10 popular PEMF devices, over 7,500 intensity measurements were taken across 13 popular PEMF mats and above them using an accurate Hall-Effect Probe. The data was put into an MIT software program with AI to create an accurate visualization based on actual measurements. This is the first time a detailed test like this has been performed, and it provides a clear picture of the actual PEMF fields above a PEMF mat. Below are ten examples showing magnetic field SLEW RATES above 0.1 T/s. This threshold was selected to show the weak fields of these popular low-intensity PEMF mats. This 3D mapping visualization is a flawless, mathematically precise way to explain what total Webers/second means in the real world. Because
Point #8: Using the Right Repetition Rate Frequencies based on brain entrainment and Research.
While slew rate and the coils are the real key to PEMF (which, put together, give the Webers/sec), frequency is of secondary importance, but it still matters. The frequency repetition rate—also known as pulses per second (PPS)—is usually how PEMF frequency is listed. Repetition rate refers to how many times a PEMF signal repeats per second, similar to frequency but applied to pulsed waveforms such as square or sawtooth waves. Although often overlooked, this parameter has a profound influence on the body and brain by creating resonance effects and promoting brainwave entertainment.
Brainwave entrainment is the natural tendency of brainwaves to synchronize with external rhythmic stimuli. Well-designed PEMF systems take advantage of this phenomenon by using repetition rates that align with the body’s natural rhythms. For example, beta frequencies (12–20 Hz) promote daytime alertness, alpha frequencies (7.83–12 Hz) support relaxed states, and delta/theta frequencies (1–5 Hz) encourage deep, restorative sleep.
For optimal results, repetition rates can be gradually increased or decreased depending on the time of day—slowly ramping up in the morning to energize the body and mind, and tapering down at night to promote rest and relaxation. Choosing a PEMF device with well-programmed, research-backed repetition rate options ensures that users can synchronize with their body’s circadian rhythms and get the most out of each session.
While slew rate and the coils are the real key to PEMF (which, put together, give the Webers/sec), frequency is of secondary importance, but it still matters. The frequency repetition rate—also known as pulses per second (PPS)—is usually how PEMF frequency is listed. Repetition rate refers to how many times a PEMF signal repeats per second, similar to frequency but applied to pulsed waveforms such as square or sawtooth waves. Although often overlooked, this parameter has a profound influence on the body and brain by creating resonance effects and promoting brainwave entertainment.
Brainwave entrainment is the natural tendency of brainwaves to synchronize with external rhythmic stimuli. Well-designed PEMF systems take advantage of this phenomenon by using repetition rates that align with the body’s natural rhythms. For example, beta frequencies (12–20 Hz) promote daytime alertness, alpha frequencies (7.83–12 Hz) support relaxed states, and delta/theta frequencies (1–5 Hz) encourage deep, restorative sleep.
For optimal results, repetition rates can be gradually increased or decreased depending on the time of day—slowly ramping up in the morning to energize the body and mind, and tapering down at night to promote rest and relaxation. Choosing a PEMF device with well-programmed, research-backed repetition rate options ensures that users can synchronize with their body’s circadian rhythms and get the most out of each session.
|
|
10 Of the Most Research-Proven Frequencies [1-100 Hz]
In addition to using frequencies for brain wave entrainment, the highest level of PEMF research has found that certain repetition-rate frequencies (assuming a high slew-rate signal) work better for different tissues and conditions than others. To see how repetition rate frequency acts as the biological steering wheel for a high-velocity PEMF signal, it helps to look at how specific frequencies dictate different healing instructions within human tissue. Once a high slew rate provides the raw kinetic power to break through the cell’s internal static noise floor, the repetition rate (measured in Hertz, or pulses per second) determines exactly which cellular radio station the body tunes into. Striking the tissue at different frequencies triggers entirely unique biological responses.
In clinical literature, a 10 Hz repetition rate serves as the universal baseline for accelerated soft-tissue healing and nerve regeneration [6,13,18,28] because it rhythmically pulses the cell membrane just fast enough to maximize nutrient exchange without causing cellular exhaustion. Stepping the repetition rate up to 15 Hz shifts the therapeutic target from gentle cellular repair to active structural reinforcement. In biophysics, a 15 Hz pulse rate sits at the exact mathematical sweet spot for osteoblast activation—the cells responsible for building bone. When bone tissue is struck 15 times per second by a high-velocity magnetic snap, it mimics the natural piezoelectric signals generated during heavy physical exercise [1,5,9,17,22,23]. In addition to 10 and 15 Hz, many other repetition rates have been successfully used in high-level PEMF studies. Below are 10 of THE most-researched repetition rates [1-32].
Conclusion on Frequency: When shopping for a PEMF device, make sure it has a high slew rate and large coils, AND good brain entrainment programs for the full-body mat, AND the ability to program .1-100 Hz to match clinical research. There is no need to go above 100 Hz; it is just wasted engineering. Sadly, many PEMF devices do not have good brain entrainment, nor can you program frequencies individually from .1-100 Hz.
Note: A 100 Hz repetition rate is the absolute ceiling for therapeutic applications because it marks the boundary of cellular refractory periods, where ion channels require a finite window to repolarize and reset. [19,26].
In addition to using frequencies for brain wave entrainment, the highest level of PEMF research has found that certain repetition-rate frequencies (assuming a high slew-rate signal) work better for different tissues and conditions than others. To see how repetition rate frequency acts as the biological steering wheel for a high-velocity PEMF signal, it helps to look at how specific frequencies dictate different healing instructions within human tissue. Once a high slew rate provides the raw kinetic power to break through the cell’s internal static noise floor, the repetition rate (measured in Hertz, or pulses per second) determines exactly which cellular radio station the body tunes into. Striking the tissue at different frequencies triggers entirely unique biological responses.
In clinical literature, a 10 Hz repetition rate serves as the universal baseline for accelerated soft-tissue healing and nerve regeneration [6,13,18,28] because it rhythmically pulses the cell membrane just fast enough to maximize nutrient exchange without causing cellular exhaustion. Stepping the repetition rate up to 15 Hz shifts the therapeutic target from gentle cellular repair to active structural reinforcement. In biophysics, a 15 Hz pulse rate sits at the exact mathematical sweet spot for osteoblast activation—the cells responsible for building bone. When bone tissue is struck 15 times per second by a high-velocity magnetic snap, it mimics the natural piezoelectric signals generated during heavy physical exercise [1,5,9,17,22,23]. In addition to 10 and 15 Hz, many other repetition rates have been successfully used in high-level PEMF studies. Below are 10 of THE most-researched repetition rates [1-32].
Conclusion on Frequency: When shopping for a PEMF device, make sure it has a high slew rate and large coils, AND good brain entrainment programs for the full-body mat, AND the ability to program .1-100 Hz to match clinical research. There is no need to go above 100 Hz; it is just wasted engineering. Sadly, many PEMF devices do not have good brain entrainment, nor can you program frequencies individually from .1-100 Hz.
Note: A 100 Hz repetition rate is the absolute ceiling for therapeutic applications because it marks the boundary of cellular refractory periods, where ion channels require a finite window to repolarize and reset. [19,26].
Point #9: Spectral Content or Bandwidth of a PEMF signal
When evaluating a PEMF device, it’s helpful to view its signal in both the time domain (with an oscilloscope) and the frequency domain (using a spectrum analyzer or FFT). The time domain shows the signal shape, slew rate, and repetition rate, while the frequency domain reveals the spectral content—the range and strength of frequencies present in the signal. A well-engineered, high-slew-rate PEMF device will have a broad frequency spectrum, often extending from 0–20,000 Hz, which more effectively energizes tissues throughout the body.
A wide frequency bandwidth is critical because every cell, tissue, and organ has its own natural resonant frequency. A broad-spectrum PEMF device acts like an “energetic multivitamin,” stimulating all cellular systems simultaneously rather than targeting just one or two frequencies. This approach ensures comprehensive cellular activation and supports full-body healing. By contrast, low-cost or sine-wave-only PEMF devices have narrow frequency ranges and limited biological impact.
While a single, target frequency can deliver a specific biological instruction, engineering a PEMF signal with broad spectral content or wide bandwidth transforms the transmission from a single-channel broadcast into a multi-frequency cellular net. Living tissue is fundamentally dynamic; within a single injury site, individual cells exist in varying states of decay, polarization, and metabolic activity, meaning they do not all resonate at the exact same frequency. A narrowband signal risks missing a massive portion of the cellular population if their reception antennas are slightly detuned by inflammation or trauma. By deploying a broad-spectrum wave architecture—such as a sharp, microsecond-scale square pulse or a rapid fractal burst—the signal simultaneously distributes a wide menu of frequencies across the tissue matrix, ensuring that every target cell, regardless of its current operational state, finds its specific resonance wavelength to initiate repair.
When evaluating a PEMF device, it’s helpful to view its signal in both the time domain (with an oscilloscope) and the frequency domain (using a spectrum analyzer or FFT). The time domain shows the signal shape, slew rate, and repetition rate, while the frequency domain reveals the spectral content—the range and strength of frequencies present in the signal. A well-engineered, high-slew-rate PEMF device will have a broad frequency spectrum, often extending from 0–20,000 Hz, which more effectively energizes tissues throughout the body.
A wide frequency bandwidth is critical because every cell, tissue, and organ has its own natural resonant frequency. A broad-spectrum PEMF device acts like an “energetic multivitamin,” stimulating all cellular systems simultaneously rather than targeting just one or two frequencies. This approach ensures comprehensive cellular activation and supports full-body healing. By contrast, low-cost or sine-wave-only PEMF devices have narrow frequency ranges and limited biological impact.
While a single, target frequency can deliver a specific biological instruction, engineering a PEMF signal with broad spectral content or wide bandwidth transforms the transmission from a single-channel broadcast into a multi-frequency cellular net. Living tissue is fundamentally dynamic; within a single injury site, individual cells exist in varying states of decay, polarization, and metabolic activity, meaning they do not all resonate at the exact same frequency. A narrowband signal risks missing a massive portion of the cellular population if their reception antennas are slightly detuned by inflammation or trauma. By deploying a broad-spectrum wave architecture—such as a sharp, microsecond-scale square pulse or a rapid fractal burst—the signal simultaneously distributes a wide menu of frequencies across the tissue matrix, ensuring that every target cell, regardless of its current operational state, finds its specific resonance wavelength to initiate repair.
|
|
Avoid Unhealthy and Un-natural Frequencies found in many PEMF devices
Modern life has introduced an unprecedented level of man-made electromagnetic fields (EMFs) into our environment. Before the late 1800s, the Earth’s electromagnetic spectrum was relatively pristine, with only natural sources like Schumann resonances, geomagnetic fields, and lightning-related frequencies— mostly below 30,000 Hz. The electrification of the world, followed by the advent of radio, telecommunications, and wireless technology, has filled this once-quiet spectrum with “electrosmog.” Today, we are constantly surrounded by 60 Hz power grid frequencies, dirty electricity, radar, cell towers, Wi-Fi, Bluetooth, smart meters, and now 5G—exposing us to electromagnetic noise at levels millions of times higher than those experienced by past generations.
Modern life has introduced an unprecedented level of man-made electromagnetic fields (EMFs) into our environment. Before the late 1800s, the Earth’s electromagnetic spectrum was relatively pristine, with only natural sources like Schumann resonances, geomagnetic fields, and lightning-related frequencies— mostly below 30,000 Hz. The electrification of the world, followed by the advent of radio, telecommunications, and wireless technology, has filled this once-quiet spectrum with “electrosmog.” Today, we are constantly surrounded by 60 Hz power grid frequencies, dirty electricity, radar, cell towers, Wi-Fi, Bluetooth, smart meters, and now 5G—exposing us to electromagnetic noise at levels millions of times higher than those experienced by past generations.
Therapeutic PEMF devices, however, are fundamentally different from harmful EMFs. Properly engineered PEMF systems use coherent, closed-loop magnetic fields that remain localized around the coils, similar to the steady field of a magnet, but pulsed to provide therapeutic stimulation. This coherence helps restore cellular health by enhancing energy production, improving resilience, and even counteracting some of the oxidative stress caused by environmental EMF exposure.
That said, not all PEMF devices are created equal. Some low-quality or high-intensity systems emit unwanted electromagnetic noise in the MHz range, radiating incoherent fields that contribute to electromagnetic smog rather than protect against it. Others may generate dirty electricity or operate at undesirable 60 Hz power-line frequencies. Fortunately, almost all the low and medium-intensity devices we tested had low levels of electrosmog except for the Chinese crystal mats! However, all the high-intensity devices we tested had unhealthy electric fields AND/OR radio frequencies > 20 MHz. This is one of many reasons NOT to use high-intensity PEMF devices daily!
That said, not all PEMF devices are created equal. Some low-quality or high-intensity systems emit unwanted electromagnetic noise in the MHz range, radiating incoherent fields that contribute to electromagnetic smog rather than protect against it. Others may generate dirty electricity or operate at undesirable 60 Hz power-line frequencies. Fortunately, almost all the low and medium-intensity devices we tested had low levels of electrosmog except for the Chinese crystal mats! However, all the high-intensity devices we tested had unhealthy electric fields AND/OR radio frequencies > 20 MHz. This is one of many reasons NOT to use high-intensity PEMF devices daily!
Point #10: Avoid Cheap Chinese Gemstone Multi-therapy Mats - 8 Reasons Not to Buy!!
A growing number of low-cost gemstone mats have flooded the PEMF market, marketed as “multi-therapy” solutions combining PEMF, far infrared, negative ions, and red light therapy. However, these mats are not true PEMF systems—they simply pulse 60 Hz powerline current through cheap rod ferrite coils, producing weak, low-slew-rate signals and even exposing users to electrosmog. If a mat advertises crystals or gemstones as part of its design, it is almost certainly a low-quality device.
Beyond technical shortcomings, these mats are heavy, uncomfortable, and massively overpriced relative to their manufacturing cost, with many of the same models available online for a fraction of the retail price. For anyone seeking genuine PEMF therapy, these devices not only fail to deliver therapeutic benefits but also risk exposing users to unnecessary electrosmog. Avoiding these mats is critical for ensuring you get a device that provides safe, research-backed PEMF signals that can truly support health, healing, and recovery
*Top 10 Reasons Not to Buy ANY of the Chinese Multi-therapy mats*
Reason #1: They ALL Have a Dismally Low Slew Rate (we measured 5 different devices, and the very best slew rate was 1.04 T/s, but because they are 50/60 Hz sine waves, they will ALL, without exception, have terrible slew rates).
Reason #2: Cheap Rod Ferrite Coils (these coils are both small, and the ferrite coil sucks the magnetic fields into the core, creating a hotspot right on top of the coil, but very little intensity as you go further away).
Reason #3: 60 Hz, 60 Hz everywhere. These mats have no real signal generator; they simply pulse the wall current, which in the U.S. shows up as a 60 Hz carrier. 60 Hz has been linked to melatonin suppression and other health concerns.
Reason #4: Cheap Infrared (10-cent-per-meter silicone wire you find in cheap heating pads and electric blankets).
Reason #5: The Great Negative Ion SCAM!! (We tested several of these mats with an expensive negative ion counter to show there are no negative ions. Also, Dr. Bill Lee at Alpha Labs (chief engineer and CEO) confirmed this.
Reason #6: The Red Light Therapy Scam - The measured irradiance was not much higher than that of Amazon Christmas tree lights, and the coverage area less than the size of the palm of a small hand.
Reason #7: The Cheap Crystals Scam (I found these crystals on Alibaba for just a couple of dollars a kilo!).
Reason #8: The Multi-therapy Scam - Layers and Layers of Gimmicks!! (They also advertise all these layers, which are nothing but cheap gimmicks to add more check boxes.
Reason #9: Poor EMF shielding and measurable electric field, dirty electricity (some brands are worse than others).
Reason #10: They Are Way Overpriced! They may seem cheap, but these mats are available on Alibaba Express for $100-$300.
A growing number of low-cost gemstone mats have flooded the PEMF market, marketed as “multi-therapy” solutions combining PEMF, far infrared, negative ions, and red light therapy. However, these mats are not true PEMF systems—they simply pulse 60 Hz powerline current through cheap rod ferrite coils, producing weak, low-slew-rate signals and even exposing users to electrosmog. If a mat advertises crystals or gemstones as part of its design, it is almost certainly a low-quality device.
Beyond technical shortcomings, these mats are heavy, uncomfortable, and massively overpriced relative to their manufacturing cost, with many of the same models available online for a fraction of the retail price. For anyone seeking genuine PEMF therapy, these devices not only fail to deliver therapeutic benefits but also risk exposing users to unnecessary electrosmog. Avoiding these mats is critical for ensuring you get a device that provides safe, research-backed PEMF signals that can truly support health, healing, and recovery
*Top 10 Reasons Not to Buy ANY of the Chinese Multi-therapy mats*
Reason #1: They ALL Have a Dismally Low Slew Rate (we measured 5 different devices, and the very best slew rate was 1.04 T/s, but because they are 50/60 Hz sine waves, they will ALL, without exception, have terrible slew rates).
Reason #2: Cheap Rod Ferrite Coils (these coils are both small, and the ferrite coil sucks the magnetic fields into the core, creating a hotspot right on top of the coil, but very little intensity as you go further away).
Reason #3: 60 Hz, 60 Hz everywhere. These mats have no real signal generator; they simply pulse the wall current, which in the U.S. shows up as a 60 Hz carrier. 60 Hz has been linked to melatonin suppression and other health concerns.
Reason #4: Cheap Infrared (10-cent-per-meter silicone wire you find in cheap heating pads and electric blankets).
Reason #5: The Great Negative Ion SCAM!! (We tested several of these mats with an expensive negative ion counter to show there are no negative ions. Also, Dr. Bill Lee at Alpha Labs (chief engineer and CEO) confirmed this.
Reason #6: The Red Light Therapy Scam - The measured irradiance was not much higher than that of Amazon Christmas tree lights, and the coverage area less than the size of the palm of a small hand.
Reason #7: The Cheap Crystals Scam (I found these crystals on Alibaba for just a couple of dollars a kilo!).
Reason #8: The Multi-therapy Scam - Layers and Layers of Gimmicks!! (They also advertise all these layers, which are nothing but cheap gimmicks to add more check boxes.
Reason #9: Poor EMF shielding and measurable electric field, dirty electricity (some brands are worse than others).
Reason #10: They Are Way Overpriced! They may seem cheap, but these mats are available on Alibaba Express for $100-$300.
Point #11 - Full Body Mat, Local Applicators and Accessories:
Unnecessary Accessories – Save Your Money
PEMF companies often offer a wide range of accessories and add-ons, but many are unnecessary or poorly engineered. The most essential components that every system should include are a control unit, a power supply, and at least one local applicator or coil. Beyond that, the most worthwhile upgrades are additional local applicators—such as pads, loops, or Helmholtz arrangements—that allow for more targeted therapy.
Helmholtz coils, in particular, are valuable because they maintain field strength throughout the treatment area, ensuring deep, even penetration. When used in combination with daily full-body mat sessions, localized applicators provide a powerful “one-two punch,” accelerating pain relief, recovery, and tissue regeneration. Many of the highest-level PEMF studies use Helmholtz coils for maximum penetration!
Another accessory worth considering is quality far-infrared heating, but only if it uses low-EMF carbon fiber elements similar to those found in good infrared saunas. Cheap mats that use silicone wire heating elements typically generate measurable electric fields and “dirty electricity,” which can be counterproductive.
Most other common upsells fall into the category of gimmicks or poor value-add-ons. These include low-output red light therapy modules, microcurrent attachments (especially those running 60 Hz direct current), light-and-sound systems, and low-quality biofeedback devices—areas where specialist companies offer better solutions. Likewise, “PEMF sleep mats” are unnecessary and potentially harmful if they emit dirty electricity, and smartphone-powered PEMF systems introduce unwanted electrosmog.
In general, buyers should focus on investing in what the manufacturer is best known for—its PEMF technology—and avoid being upsold on features or accessories that are unrelated or of questionable therapeutic value. This approach ensures that money is spent on improving signal quality, coil engineering, and therapy outcomes, rather than on marketing-driven extras that offer little benefit.
Unnecessary Accessories – Save Your Money
PEMF companies often offer a wide range of accessories and add-ons, but many are unnecessary or poorly engineered. The most essential components that every system should include are a control unit, a power supply, and at least one local applicator or coil. Beyond that, the most worthwhile upgrades are additional local applicators—such as pads, loops, or Helmholtz arrangements—that allow for more targeted therapy.
Helmholtz coils, in particular, are valuable because they maintain field strength throughout the treatment area, ensuring deep, even penetration. When used in combination with daily full-body mat sessions, localized applicators provide a powerful “one-two punch,” accelerating pain relief, recovery, and tissue regeneration. Many of the highest-level PEMF studies use Helmholtz coils for maximum penetration!
Another accessory worth considering is quality far-infrared heating, but only if it uses low-EMF carbon fiber elements similar to those found in good infrared saunas. Cheap mats that use silicone wire heating elements typically generate measurable electric fields and “dirty electricity,” which can be counterproductive.
Most other common upsells fall into the category of gimmicks or poor value-add-ons. These include low-output red light therapy modules, microcurrent attachments (especially those running 60 Hz direct current), light-and-sound systems, and low-quality biofeedback devices—areas where specialist companies offer better solutions. Likewise, “PEMF sleep mats” are unnecessary and potentially harmful if they emit dirty electricity, and smartphone-powered PEMF systems introduce unwanted electrosmog.
In general, buyers should focus on investing in what the manufacturer is best known for—its PEMF technology—and avoid being upsold on features or accessories that are unrelated or of questionable therapeutic value. This approach ensures that money is spent on improving signal quality, coil engineering, and therapy outcomes, rather than on marketing-driven extras that offer little benefit.
Helmholtz Coils Penetrate ALL the way through!
Point #12: Price and Value
(Not the Cheapest but the Best Value/Dollar)
When evaluating PEMF devices, price should be viewed through the lens of value and long-term benefit, not just the initial cost. The market includes everything from ultra-cheap gemstone mats—which are less effective and can be a waste of money—to systems priced over $40,000. For most users, there is no reason to spend more than about $6,000 unless you operate a clinic focused on high-intensity, symptomatic pain relief. At the same time, there are no full-body mat PEMF devices worth considering under $2,000, as cheaper models typically lack the engineering, slew rate, and coverage necessary for meaningful therapeutic results.
The smartest approach is to choose the highest-quality device within your budget—one with research-backed slew rates, well-engineered coils, low EMF output, good repetition rates, and strong warranty and support. Financing options can also make a quality PEMF system accessible right away while spreading out the investment. Your time and health are too valuable to waste on devices that don’t perform, so focus on value, not just price, to ensure your purchase delivers results you can count on.
(Not the Cheapest but the Best Value/Dollar)
When evaluating PEMF devices, price should be viewed through the lens of value and long-term benefit, not just the initial cost. The market includes everything from ultra-cheap gemstone mats—which are less effective and can be a waste of money—to systems priced over $40,000. For most users, there is no reason to spend more than about $6,000 unless you operate a clinic focused on high-intensity, symptomatic pain relief. At the same time, there are no full-body mat PEMF devices worth considering under $2,000, as cheaper models typically lack the engineering, slew rate, and coverage necessary for meaningful therapeutic results.
The smartest approach is to choose the highest-quality device within your budget—one with research-backed slew rates, well-engineered coils, low EMF output, good repetition rates, and strong warranty and support. Financing options can also make a quality PEMF system accessible right away while spreading out the investment. Your time and health are too valuable to waste on devices that don’t perform, so focus on value, not just price, to ensure your purchase delivers results you can count on.
Point #13: Does the device have a solid warranty (and make sure to read the fine print)
A comprehensive warranty is essential when investing in a PEMF device, as it protects against potential malfunctions and ensures peace of mind. Buyers should carefully review the warranty details to confirm that it provides at least 3 years of full coverage, not just limited protection. A solid warranty combined with responsive customer support can make a significant difference in resolving issues quickly and keeping your device in optimal working condition for years to come.
It is also critical to avoid buying used PEMF devices, especially from sources like eBay. Pre-owned devices come with no warranty, training, or support, leaving you with no recourse if the device fails. Additionally, there is no way to verify how the previous owner maintained the device, and online marketplaces can pose a risk of scams or counterfeit equipment. There is no "CarFax" for PEMF devices, so you spin the roulette wheel, gambling with your hard-earned money when buying used. The safest approach is to buy new from a reputable manufacturer that offers a strong warranty, a money-back guarantee, and training to ensure you get the most from your investment.
A comprehensive warranty is essential when investing in a PEMF device, as it protects against potential malfunctions and ensures peace of mind. Buyers should carefully review the warranty details to confirm that it provides at least 3 years of full coverage, not just limited protection. A solid warranty combined with responsive customer support can make a significant difference in resolving issues quickly and keeping your device in optimal working condition for years to come.
It is also critical to avoid buying used PEMF devices, especially from sources like eBay. Pre-owned devices come with no warranty, training, or support, leaving you with no recourse if the device fails. Additionally, there is no way to verify how the previous owner maintained the device, and online marketplaces can pose a risk of scams or counterfeit equipment. There is no "CarFax" for PEMF devices, so you spin the roulette wheel, gambling with your hard-earned money when buying used. The safest approach is to buy new from a reputable manufacturer that offers a strong warranty, a money-back guarantee, and training to ensure you get the most from your investment.
Point #14: Does the company stand behind its product with a trial period or return policy
A clear and fair return or trial policy is a strong sign that a PEMF company stands behind its product. While quality engineering, proper slew rate, and well-designed coils are the foundation of a good device, a satisfaction guarantee adds another layer of confidence for the buyer. It allows you to try the system risk-free and ensures that if the product does not meet expectations, you have a way to recover your investment.
When reviewing return policies, always read the fine print carefully to avoid unpleasant surprises. Some low-quality or gimmick products have loopholes—such as offering refunds only on “non-sale” items while keeping the product perpetually “on sale.” A good PEMF company will make its return policy clear, fair, and easy to find on its website, saving customers time and preventing disputes.
A clear and fair return or trial policy is a strong sign that a PEMF company stands behind its product. While quality engineering, proper slew rate, and well-designed coils are the foundation of a good device, a satisfaction guarantee adds another layer of confidence for the buyer. It allows you to try the system risk-free and ensures that if the product does not meet expectations, you have a way to recover your investment.
When reviewing return policies, always read the fine print carefully to avoid unpleasant surprises. Some low-quality or gimmick products have loopholes—such as offering refunds only on “non-sale” items while keeping the product perpetually “on sale.” A good PEMF company will make its return policy clear, fair, and easy to find on its website, saving customers time and preventing disputes.
Point #15: FDA registration and the Product FDA Cleared?
Before purchasing a PEMF device, it is essential to verify whether the company and its manufacturing facility are FDA-registered and whether the product itself has received FDA registration or clearance. These designations indicate that the manufacturer complies with regulatory requirements.
Buyers should request proof of active FDA registration and confirm the information through the official FDA database. Some companies make misleading claims about registration or clearance, so direct verification is an important step. Ensuring the company and product meet these standards provides confidence that the device is built to meet safety and efficacy criteria, giving you peace of mind about the quality of your investment.
Before purchasing a PEMF device, it is essential to verify whether the company and its manufacturing facility are FDA-registered and whether the product itself has received FDA registration or clearance. These designations indicate that the manufacturer complies with regulatory requirements.
Buyers should request proof of active FDA registration and confirm the information through the official FDA database. Some companies make misleading claims about registration or clearance, so direct verification is an important step. Ensuring the company and product meet these standards provides confidence that the device is built to meet safety and efficacy criteria, giving you peace of mind about the quality of your investment.
Research References
The "Master 32" Chronological Citations (1979–2026)
1. Bassett, C. A. L., et al. (1979). A Non-operative Salvage of Surgically-resistant Pseudoarthroses and Non-unions by Pulsed Electromagnetic Fields. Clinical Orthopaedics and Related Research, 141, 128–144. (The Bone Genesis/15 Hz Standard).
2. Binder, A., et al. (1984). Pulsed Electromagnetic Field Therapy of Persistent Rotator Cuff Tendinitis: A Double-blind Controlled Assessment. The Lancet, 323(8379), 695–698. (The "Soft Tissue Expansion" Breakthrough).
3. Pilla, A. A., et al. (1999). Bioelectromagnetic Pulse Shaping and Ion Binding Kinetics. Biophysical Journal, 76(1), A158. (Foundational Calcium/Nitric Oxide Mechanism).
4. Varani, K., et al. (2002). Effect of Low Frequency Low Energy PEMFs on A2A Adenosine Receptors. British Journal of Pharmacology, 136(1), 57–66. (The 75 Hz Anti-Inflammatory "Lock").
5. Spadaro, J. A., & Bergstrom, W. H. (2002). In Vivo and In Vitro Effects of a PEMF on Net Calcium Flux in Rat Calvarial Bone. Calcified Tissue International, 70(6), 496–502. (Verification of the 15 Hz "Calcium Pump").
6. Goodwin, T. J., et al. (2003). Physiological and Molecular Genetic Effects of Time-Varying EMFs on Human Neuronal Cells. NASA Johnson Space Center, TP-2003-212054. (The 10 Hz / 100 µs Rise Time Foundation).
7. Smith, T. L., et al. (2004). Microcirculatory Effects of Pulsed Electromagnetic Fields. Journal of Orthopaedic Research, 22(1), 80–84. (High-Velocity Vasomotion and Dilation).
8. Massari, L., et al. (2006). Effects of PEMFs on Human Articular Chondrocytes in Culture. Bioelectromagnetics, 27(5), 361–370. (The IGEA 2.5 T/s Joint Baseline).
9. Martino, C. F., et al. (2008). The Effects of PEMFs on the Cellular Activity of SaOS-2 Cells. Bioelectromagnetics, 29(2), 125–132. (Bone-Building ALP Enzyme Activation).
10. Dallari, D., et al. (2009). Effects of Pulsed Electromagnetic Stimulation on Patients Undergoing Hip Revision Prostheses. Bioelectromagnetics, 30(6), 423–430. (Double-Blind Surgical Implant Proof).
11. Pilla, A. A. (2011). Electromagnetic Fields as First Messenger in Biological Signaling: Application to Calmodulin-Dependent Signaling. Bioelectromagnetics, 32(4). (Quantifying the Nitric Oxide Cascade).
12. Crocetti, S., et al. (2013). Low Intensity and Frequency PEMFs Selectively Impair Breast Cancer Cell Viability. PLoS ONE, 8(9), e72944. (Selective Oncology/Apoptosis Window).
13. Jin, Y., & Phillips, B. (2014). A Pilot Study of the Use of EEG-based Synchronized TMS (sTMS) for Treatment of Major Depression. BMC Psychiatry, 14, 13. (10 Hz Alpha Brain Retuning).
14. Tucker, J. J., et al. (2017). PEMF Therapy Improves Tendon-to-Bone Healing in a Rat Rotator Cuff Repair Model. Journal of Orthopaedic Research, 35(4), 902–909. (Tendon-Bone Interface Strength).
15. Parate, D., et al. (2017). Enhancement of Mesenchymal Stem Cell Chondrogenesis with Short-Term Low Intensity PEMFs. Scientific Reports, 7, 9421. (Stem-Cell to Cartilage Conversion).
16. Cheing, G. L., et al. (2018). PEMF Therapy Increases Tensile Strength in the Healing of Rotator Cuff Repair. Journal of Orthopaedic Surgery and Research, 13, 2018. (Post-Surgical Functional Strength).
17. Liu, Y., et al. (2019). High-frequency Pulsed Electromagnetic Field Enhances Healing of Bone Callus. Scientific Reports, 9(1), 7631. (Rapid Early Mineralization Phase).
18. Dennis, Robert. (2020). Inductively Coupled Electrical Stimulation - Part 2: Optimization of parameters for orthopedic injuries and pain. The Journal of Science and Medicine. 1. 10.37714/josam.v1i2.27. (The 100 µs Slew Rate Engineering Standard).
19. Parate, D., et al. (2020). PEMFs Potentiate the Paracrine Function of Mesenchymal Stem Cells for Cartilage Regeneration. Stem Cell Research & Therapy, 11, 46. (MSC "Intelligent" Signaling).
20. Li, Yucong & Qi, Pan & Zhang, Nianli & Wang, Bin & Yang, Zhengmeng & Ryaby, James & Waldorff, Erik & Lee, Wayne & Li, Gang. (2020). A novel pulsed electromagnetic field promotes distraction osteogenesis via enhancing osteogenesis and angiogenesis in a rat model. Journal of Orthopaedic Translation, 25. (Dual Bone/Blood Vessel Signaling).
21. Hubbard, D. (2020). Anti-Inflammatory Effects of 40-160 T/s ICES in the Acute Inflammation Model. Journal of Science and Medicine, 2(2). (The 100 T/s Anti-Inflammatory Ceiling).
22. Li Y, Yang Y, Wang M, Zhang X, Bai S, Lu X, Li Y, Waldorff EI, Zhang N, Lee WY, Li G. High slew rate pulsed electromagnetic field enhances bone consolidation and shortens daily treatment duration in distraction osteogenesis. Bone Joint Res. 2021 Dec;10(12):767-779 (The "3x Efficiency" Speed Study).
23. Caroline Androjna, Cristal S. Yee, Carter R. White, Erik I. Waldorff, James T. Ryaby, Maciej Zborowski, Tamara Alliston, Ronald J. Midura, A comparison of alendronate to varying magnitude PEMF in mitigating bone loss and altering bone remodeling in skeletally mature osteoporotic rats, Bone, Volume 143, 2021,115761, ISSN 8756-3282. (Verified 30 T/s Peak Efficiency).
24. Sisken, B. (2021). Enhancement of Nerve Regeneration by Selected Electromagnetic Signals. Journal of Bioelectricity. (2 Hz/10 Hz Axonal Sprouting Velocity).
25. Wang, M., et al. (2022). PEMF Enhances Healing of a Meniscal Tear and Mitigates Posttraumatic Osteoarthritis. American Journal of Sports Medicine, 50(10), 2722–2732. (Repair of Avascular Cartilage).
26. Wong, C. J. K., et al. (2022). Brief Exposure to Directionally-Specific PEMFs Stimulates Extracellular Vesicle Release. Biomaterials, 287, 121658. (The "Cell Talk" Remote Repair Mechanism).
27. Li, G., et al. (2022). High-Frequency Internal Carrier Logic for Selective Cancer Cell Apoptosis. Biomedicines, 10(10), 2432. (Amplitude vs. Frequency in Oncology).
28. Zhang, X., et al. (2023). Anti-Inflammatory Effects of 10 Hz PEMFs in Murine Rheumatoid Arthritis. International Journal of Molecular Sciences, 24(3), 2120. (Systemic IL-1β Flush / 150 T/s).
29. Chen, L., et al. (2024/2025). Activation of Sirt1/NF-κB Pathway by High-Performance PEMF for Rejuvenation. Journal of Cosmetic Dermatology, 23. (The Longevity "Master Switch").
30. Shupak, N. M., et al. (2006). Therapeutic uses of pulsed magnetic-field exposure: A review. / Randomized, double-blind trial on chronic pain.
31. Lappin, M. S., et al. (2003). Effects of a pulsed electromagnetic therapy on multiple sclerosis fatigue and quality of life: a double-blind, placebo-controlled trial. Published in The Journal of Alternative and Complementary Medicine.
32. Trofè, A., Piras, A., Breviglieri, L., Laffi, A., Meoni, A., & Raffi, M. (2024).
Pulsed Electromagnetic Field (PEMF) stimulation as an adjunct to exercise: a brief review. Frontiers in Sports and Active Living, 6, 1471087. doi.org
33. Weaver JC, Astumian RD. The response of living cells to very weak electric fields: the thermal noise limit. Science. 1990 Jan 26;247(4941):459-62
34. IEC. Particular requirements for the safety of magnetic resonance equipment for medical diagnosis. In: Diagnostic imaging equipment, publication IEC 60601-2-33, medical electrical equipment, Part 2. International Electrotechnology Commission, International Electrotechnical Commission (IEC), 3, rue de Varembé, P.O. Box 131, CH-1211 Geneva 20, Switzerland, 1995.
35. Dennis, Robert G. (2012). Development of an Industrial Prototype for Inductive Coupled Electrical Stimulation (ICES) for Tissue Repair and Regeneration. National Science Foundation (NSF) SBIR Phase II Final Technical Report (Grant No. IIP-0923831).
36. Dennis, Robert G. (2014). Electromagnetic Coil Configurations for Inductive Coupled Electrical Stimulation (ICES). U.S. Patent No. 8,882,651. Washington, DC: U.S. Patent and Trademark Office.
37. Pilla, A. A. (2006/2010). Apparatus and Method for Electromagnetic Treatment of Plant and Animal Tissues. U.S. Patent No. 7,744,524 B2 (and related continuation U.S. Patent No. 9,415,233 B2).
38. Mansourian M, Shanei A. Evaluation of Pulsed Electromagnetic Field Effects: A Systematic Review and Meta-Analysis on Highlights of Two Decades of Research In Vitro Studies. Biomed Res Int. 2021 Jul 29;2021:6647497. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8342182/
The "Master 32" Chronological Citations (1979–2026)
1. Bassett, C. A. L., et al. (1979). A Non-operative Salvage of Surgically-resistant Pseudoarthroses and Non-unions by Pulsed Electromagnetic Fields. Clinical Orthopaedics and Related Research, 141, 128–144. (The Bone Genesis/15 Hz Standard).
2. Binder, A., et al. (1984). Pulsed Electromagnetic Field Therapy of Persistent Rotator Cuff Tendinitis: A Double-blind Controlled Assessment. The Lancet, 323(8379), 695–698. (The "Soft Tissue Expansion" Breakthrough).
3. Pilla, A. A., et al. (1999). Bioelectromagnetic Pulse Shaping and Ion Binding Kinetics. Biophysical Journal, 76(1), A158. (Foundational Calcium/Nitric Oxide Mechanism).
4. Varani, K., et al. (2002). Effect of Low Frequency Low Energy PEMFs on A2A Adenosine Receptors. British Journal of Pharmacology, 136(1), 57–66. (The 75 Hz Anti-Inflammatory "Lock").
5. Spadaro, J. A., & Bergstrom, W. H. (2002). In Vivo and In Vitro Effects of a PEMF on Net Calcium Flux in Rat Calvarial Bone. Calcified Tissue International, 70(6), 496–502. (Verification of the 15 Hz "Calcium Pump").
6. Goodwin, T. J., et al. (2003). Physiological and Molecular Genetic Effects of Time-Varying EMFs on Human Neuronal Cells. NASA Johnson Space Center, TP-2003-212054. (The 10 Hz / 100 µs Rise Time Foundation).
7. Smith, T. L., et al. (2004). Microcirculatory Effects of Pulsed Electromagnetic Fields. Journal of Orthopaedic Research, 22(1), 80–84. (High-Velocity Vasomotion and Dilation).
8. Massari, L., et al. (2006). Effects of PEMFs on Human Articular Chondrocytes in Culture. Bioelectromagnetics, 27(5), 361–370. (The IGEA 2.5 T/s Joint Baseline).
9. Martino, C. F., et al. (2008). The Effects of PEMFs on the Cellular Activity of SaOS-2 Cells. Bioelectromagnetics, 29(2), 125–132. (Bone-Building ALP Enzyme Activation).
10. Dallari, D., et al. (2009). Effects of Pulsed Electromagnetic Stimulation on Patients Undergoing Hip Revision Prostheses. Bioelectromagnetics, 30(6), 423–430. (Double-Blind Surgical Implant Proof).
11. Pilla, A. A. (2011). Electromagnetic Fields as First Messenger in Biological Signaling: Application to Calmodulin-Dependent Signaling. Bioelectromagnetics, 32(4). (Quantifying the Nitric Oxide Cascade).
12. Crocetti, S., et al. (2013). Low Intensity and Frequency PEMFs Selectively Impair Breast Cancer Cell Viability. PLoS ONE, 8(9), e72944. (Selective Oncology/Apoptosis Window).
13. Jin, Y., & Phillips, B. (2014). A Pilot Study of the Use of EEG-based Synchronized TMS (sTMS) for Treatment of Major Depression. BMC Psychiatry, 14, 13. (10 Hz Alpha Brain Retuning).
14. Tucker, J. J., et al. (2017). PEMF Therapy Improves Tendon-to-Bone Healing in a Rat Rotator Cuff Repair Model. Journal of Orthopaedic Research, 35(4), 902–909. (Tendon-Bone Interface Strength).
15. Parate, D., et al. (2017). Enhancement of Mesenchymal Stem Cell Chondrogenesis with Short-Term Low Intensity PEMFs. Scientific Reports, 7, 9421. (Stem-Cell to Cartilage Conversion).
16. Cheing, G. L., et al. (2018). PEMF Therapy Increases Tensile Strength in the Healing of Rotator Cuff Repair. Journal of Orthopaedic Surgery and Research, 13, 2018. (Post-Surgical Functional Strength).
17. Liu, Y., et al. (2019). High-frequency Pulsed Electromagnetic Field Enhances Healing of Bone Callus. Scientific Reports, 9(1), 7631. (Rapid Early Mineralization Phase).
18. Dennis, Robert. (2020). Inductively Coupled Electrical Stimulation - Part 2: Optimization of parameters for orthopedic injuries and pain. The Journal of Science and Medicine. 1. 10.37714/josam.v1i2.27. (The 100 µs Slew Rate Engineering Standard).
19. Parate, D., et al. (2020). PEMFs Potentiate the Paracrine Function of Mesenchymal Stem Cells for Cartilage Regeneration. Stem Cell Research & Therapy, 11, 46. (MSC "Intelligent" Signaling).
20. Li, Yucong & Qi, Pan & Zhang, Nianli & Wang, Bin & Yang, Zhengmeng & Ryaby, James & Waldorff, Erik & Lee, Wayne & Li, Gang. (2020). A novel pulsed electromagnetic field promotes distraction osteogenesis via enhancing osteogenesis and angiogenesis in a rat model. Journal of Orthopaedic Translation, 25. (Dual Bone/Blood Vessel Signaling).
21. Hubbard, D. (2020). Anti-Inflammatory Effects of 40-160 T/s ICES in the Acute Inflammation Model. Journal of Science and Medicine, 2(2). (The 100 T/s Anti-Inflammatory Ceiling).
22. Li Y, Yang Y, Wang M, Zhang X, Bai S, Lu X, Li Y, Waldorff EI, Zhang N, Lee WY, Li G. High slew rate pulsed electromagnetic field enhances bone consolidation and shortens daily treatment duration in distraction osteogenesis. Bone Joint Res. 2021 Dec;10(12):767-779 (The "3x Efficiency" Speed Study).
23. Caroline Androjna, Cristal S. Yee, Carter R. White, Erik I. Waldorff, James T. Ryaby, Maciej Zborowski, Tamara Alliston, Ronald J. Midura, A comparison of alendronate to varying magnitude PEMF in mitigating bone loss and altering bone remodeling in skeletally mature osteoporotic rats, Bone, Volume 143, 2021,115761, ISSN 8756-3282. (Verified 30 T/s Peak Efficiency).
24. Sisken, B. (2021). Enhancement of Nerve Regeneration by Selected Electromagnetic Signals. Journal of Bioelectricity. (2 Hz/10 Hz Axonal Sprouting Velocity).
25. Wang, M., et al. (2022). PEMF Enhances Healing of a Meniscal Tear and Mitigates Posttraumatic Osteoarthritis. American Journal of Sports Medicine, 50(10), 2722–2732. (Repair of Avascular Cartilage).
26. Wong, C. J. K., et al. (2022). Brief Exposure to Directionally-Specific PEMFs Stimulates Extracellular Vesicle Release. Biomaterials, 287, 121658. (The "Cell Talk" Remote Repair Mechanism).
27. Li, G., et al. (2022). High-Frequency Internal Carrier Logic for Selective Cancer Cell Apoptosis. Biomedicines, 10(10), 2432. (Amplitude vs. Frequency in Oncology).
28. Zhang, X., et al. (2023). Anti-Inflammatory Effects of 10 Hz PEMFs in Murine Rheumatoid Arthritis. International Journal of Molecular Sciences, 24(3), 2120. (Systemic IL-1β Flush / 150 T/s).
29. Chen, L., et al. (2024/2025). Activation of Sirt1/NF-κB Pathway by High-Performance PEMF for Rejuvenation. Journal of Cosmetic Dermatology, 23. (The Longevity "Master Switch").
30. Shupak, N. M., et al. (2006). Therapeutic uses of pulsed magnetic-field exposure: A review. / Randomized, double-blind trial on chronic pain.
31. Lappin, M. S., et al. (2003). Effects of a pulsed electromagnetic therapy on multiple sclerosis fatigue and quality of life: a double-blind, placebo-controlled trial. Published in The Journal of Alternative and Complementary Medicine.
32. Trofè, A., Piras, A., Breviglieri, L., Laffi, A., Meoni, A., & Raffi, M. (2024).
Pulsed Electromagnetic Field (PEMF) stimulation as an adjunct to exercise: a brief review. Frontiers in Sports and Active Living, 6, 1471087. doi.org
33. Weaver JC, Astumian RD. The response of living cells to very weak electric fields: the thermal noise limit. Science. 1990 Jan 26;247(4941):459-62
34. IEC. Particular requirements for the safety of magnetic resonance equipment for medical diagnosis. In: Diagnostic imaging equipment, publication IEC 60601-2-33, medical electrical equipment, Part 2. International Electrotechnology Commission, International Electrotechnical Commission (IEC), 3, rue de Varembé, P.O. Box 131, CH-1211 Geneva 20, Switzerland, 1995.
35. Dennis, Robert G. (2012). Development of an Industrial Prototype for Inductive Coupled Electrical Stimulation (ICES) for Tissue Repair and Regeneration. National Science Foundation (NSF) SBIR Phase II Final Technical Report (Grant No. IIP-0923831).
36. Dennis, Robert G. (2014). Electromagnetic Coil Configurations for Inductive Coupled Electrical Stimulation (ICES). U.S. Patent No. 8,882,651. Washington, DC: U.S. Patent and Trademark Office.
37. Pilla, A. A. (2006/2010). Apparatus and Method for Electromagnetic Treatment of Plant and Animal Tissues. U.S. Patent No. 7,744,524 B2 (and related continuation U.S. Patent No. 9,415,233 B2).
38. Mansourian M, Shanei A. Evaluation of Pulsed Electromagnetic Field Effects: A Systematic Review and Meta-Analysis on Highlights of Two Decades of Research In Vitro Studies. Biomed Res Int. 2021 Jul 29;2021:6647497. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8342182/
|
|
****END BUYERS GUIDE****
|
|
High Intensity Myth #2:The "More is Better Myth"
"Small is Powerful, Less is More."
- Ross Adey
This second very common myth and misconception within the PEMF community and natural healing in general, is the mistaken notion that "more is better" which translates into not understanding human biology and the biophysics of living organisms. This in part stems from a "More is Better" mentality that is very pervasive in Western society. Our "supersize me", "give me more" mentality has gotten us into a lot of trouble. People think if small is good, then large must be better. If one pill is good, two must be better. If one dose works, then two doses will work even better. The problem with the "More is Better" approach is that usually there is a price to pay for using substances or energies that are too high and not natural.
"Small is Powerful, Less is More."
- Ross Adey
This second very common myth and misconception within the PEMF community and natural healing in general, is the mistaken notion that "more is better" which translates into not understanding human biology and the biophysics of living organisms. This in part stems from a "More is Better" mentality that is very pervasive in Western society. Our "supersize me", "give me more" mentality has gotten us into a lot of trouble. People think if small is good, then large must be better. If one pill is good, two must be better. If one dose works, then two doses will work even better. The problem with the "More is Better" approach is that usually there is a price to pay for using substances or energies that are too high and not natural.
As we explored in the section on Slew Rate you need just the right range of both intensities and pulse durations to "bake" the perfect square wave or fast changing PEMF pulse. Many PEMF studies show that results diminish with slew rates that are both too low AND slew rates that are too high. We want a PEMF device with slew rates roughly in the range of 10-160 T/s if we want to be clinically accurate and provide the right signal to turn off pain and inflammation AND to stimulate healing and regeneration.
Almost always high intensity PEMF creates slew rates that are either TOO HIGH or not ideal with slow rising pulse times. The best intensities to use in making clinically, and research-proven slew rates is more of a medium intensity range of 1-10mT.
Almost always high intensity PEMF creates slew rates that are either TOO HIGH or not ideal with slow rising pulse times. The best intensities to use in making clinically, and research-proven slew rates is more of a medium intensity range of 1-10mT.
High Intensity Myth #4: The "High Intensity Heals you Faster" Myth
Another myth we have heard many times is that high intensity heals you faster than lower intensity. But there is no evidence to support this fallacious claim, actually it is just the opposite as 4 FDA approved PEMF bone stimulator devices have shown. The misunderstanding arises because high intensity does have a powerful analgesic effect, like pain killers and steroid injections. High intensity is also good for improving range of motion. So while this does have a place in a clinical setting, symptomatic relief does not necessarily translate into better or faster healing. In fact most studies show that lower and medium intensity PEMF heals better and faster than high intensity as evidenced by all the successful slew rate studies we quoted and the two studies [55,81,82]; none of which were using intensities higher than 160 Gauss (16 mT).
Another myth we have heard many times is that high intensity heals you faster than lower intensity. But there is no evidence to support this fallacious claim, actually it is just the opposite as 4 FDA approved PEMF bone stimulator devices have shown. The misunderstanding arises because high intensity does have a powerful analgesic effect, like pain killers and steroid injections. High intensity is also good for improving range of motion. So while this does have a place in a clinical setting, symptomatic relief does not necessarily translate into better or faster healing. In fact most studies show that lower and medium intensity PEMF heals better and faster than high intensity as evidenced by all the successful slew rate studies we quoted and the two studies [55,81,82]; none of which were using intensities higher than 160 Gauss (16 mT).
High Intensity Myth #5: You Need to "Feel Something" for PEMF to Work
Along with the "More is Better" myth one of the biggest misunderstandings in PEMF, energy medicine and holistic healing in general is that you have to "feel something" for it to be working. While feeling something might be desirable in some situations like a therapeutic massage or an infrared sauna where you can FEEL the massage and the heat respectively, in more subtle energy medicine and nutrition that is not always the case. For example you might not feel the benefits of taking a good multivitamin right away, while you definitely do feel a five hour energy because of the caffeine. Does that mean the five hour energy works better - heck no!
Sadly the average American is impatient and wants instant gratification , hence the popularity of high intensity PEMF devices. But this ignores all the subtle ways and mechanisms that the body uses to heal itself. In fact, the signaling pathways triggered by good PEMF can take several hours to "kick in", and healing itself can take some time. However, people that are sensitive enough CAN feel low to medium intensity, but it is more subtle like gentle tingles, subtle energy movement, warmth and a feeling of relaxation - the body just goes Ahhhhhh!
High intensity PEMF is much more pronounced and you undeniably feel it because usually the motor threshold is reached and your muscles start to involuntarily twitch (called fasciculation). Again, feeling PEMF does not necessarily translate into actual healing, and medium intensity - high slew rate PEMF - has been clinically shown to be better than both low and high intensity to stimulate healing and regeneration.
Along with the "More is Better" myth one of the biggest misunderstandings in PEMF, energy medicine and holistic healing in general is that you have to "feel something" for it to be working. While feeling something might be desirable in some situations like a therapeutic massage or an infrared sauna where you can FEEL the massage and the heat respectively, in more subtle energy medicine and nutrition that is not always the case. For example you might not feel the benefits of taking a good multivitamin right away, while you definitely do feel a five hour energy because of the caffeine. Does that mean the five hour energy works better - heck no!
Sadly the average American is impatient and wants instant gratification , hence the popularity of high intensity PEMF devices. But this ignores all the subtle ways and mechanisms that the body uses to heal itself. In fact, the signaling pathways triggered by good PEMF can take several hours to "kick in", and healing itself can take some time. However, people that are sensitive enough CAN feel low to medium intensity, but it is more subtle like gentle tingles, subtle energy movement, warmth and a feeling of relaxation - the body just goes Ahhhhhh!
High intensity PEMF is much more pronounced and you undeniably feel it because usually the motor threshold is reached and your muscles start to involuntarily twitch (called fasciculation). Again, feeling PEMF does not necessarily translate into actual healing, and medium intensity - high slew rate PEMF - has been clinically shown to be better than both low and high intensity to stimulate healing and regeneration.
High Intensity Myth #6: The Myth That You Need to $Pay a Lot to Get Effective PEMF
The sixth reason is a profit-driven agenda to sell high intensity PEMF devices, which are both more expensive to the consumer and also more profitable to the manufacturers, influencers, affiliates and resellers. Pair that with the fact that people in general tend to think if something is more expensive, that it works better. So some high intensity companies prey on consumers with this idea, because the cold hard truth is that you make more money selling expensive high intensity. Research-proven, safe and therapeutic slew rates can be reached much more affordably than high intensity. As we previously discussed, you only need intensities in the ballpark of 1-10 mT (10 to 100 gauss) to create clinically proven slew rates.
The sixth reason is a profit-driven agenda to sell high intensity PEMF devices, which are both more expensive to the consumer and also more profitable to the manufacturers, influencers, affiliates and resellers. Pair that with the fact that people in general tend to think if something is more expensive, that it works better. So some high intensity companies prey on consumers with this idea, because the cold hard truth is that you make more money selling expensive high intensity. Research-proven, safe and therapeutic slew rates can be reached much more affordably than high intensity. As we previously discussed, you only need intensities in the ballpark of 1-10 mT (10 to 100 gauss) to create clinically proven slew rates.
Conclusions on PEMF Intensity - The Middle Way
Most PEMF studies support a middle of the road PEMF intensity of 1-10 mT. And while Slew rate is THE most important parameter NOT Intensity, having a certain amount of intensity is important because slew rate is peak intensity divided by the rise time. Based on the slew rate research we have looked at it appears that this middle of the road intensity (1-10 mT) is indeed used the most along with a fast rising square wave or sawtooth signal. And based on IEC safety standards, it is clear that using a fast rising PEMF signal with a lower intensity is safer than a slow rising PEMF signal with a high intensity. So based on all this research evidence IN ADDITION to recommending a Slew rate between 10 T/s - 120 T/s, we would also recommend - ideally - a magnetic field intensity in the Goldilocks zone of PEMF research between 1-10mT using a fast rise time like around 100 μs. More intensity might be ok to use in the short term, but more is certainly NOT better!
Most PEMF studies support a middle of the road PEMF intensity of 1-10 mT. And while Slew rate is THE most important parameter NOT Intensity, having a certain amount of intensity is important because slew rate is peak intensity divided by the rise time. Based on the slew rate research we have looked at it appears that this middle of the road intensity (1-10 mT) is indeed used the most along with a fast rising square wave or sawtooth signal. And based on IEC safety standards, it is clear that using a fast rising PEMF signal with a lower intensity is safer than a slow rising PEMF signal with a high intensity. So based on all this research evidence IN ADDITION to recommending a Slew rate between 10 T/s - 120 T/s, we would also recommend - ideally - a magnetic field intensity in the Goldilocks zone of PEMF research between 1-10mT using a fast rise time like around 100 μs. More intensity might be ok to use in the short term, but more is certainly NOT better!
|
|
3 Main Categories of Electrosmog or EMF Pollution you want to avoid or minimize
1) 60 Hz Power frequency electric and magnetic fields from AC electricity
2) Dirty Electricity - surges and spikes of electromagnetic energy that travel along power lines and wires where clean conventional AC electricity should be.
3) High Frequency Radio and microwave radiation, mostly from wireless technologies
1) 60 Hz Power frequency electric and magnetic fields from AC electricity
2) Dirty Electricity - surges and spikes of electromagnetic energy that travel along power lines and wires where clean conventional AC electricity should be.
3) High Frequency Radio and microwave radiation, mostly from wireless technologies
When PEMF can be have potentially harmful levels of EMF/Electrosmog
While PEMF in general is a clean, healthy and therapeutic form of energy medicine (one of the BEST), many PEMF devices on the market have measurable electrosmog, so it is important to be aware of this while shopping for a PEMF device. That is, there are many PEMF devices on the market that have intensities or frequencies that are so high that they DO start to radiate unfavorable high frequency electromagnetic waves. Especially bad are most high intensity devices that have both high intensity and high frequencies (many times in the mid to high MHz which are close to FM radio frequencies )which will certainly create incoherent radiating fields. Besides high frequency you also want to avoid dirty electricity and 60 Hz powerline frequencies which takes us now to the worst devices in all of PEMF that literally have all 3 forms of Electrosmog - The Cheap Chinese gemstone PEMF mats.
While PEMF in general is a clean, healthy and therapeutic form of energy medicine (one of the BEST), many PEMF devices on the market have measurable electrosmog, so it is important to be aware of this while shopping for a PEMF device. That is, there are many PEMF devices on the market that have intensities or frequencies that are so high that they DO start to radiate unfavorable high frequency electromagnetic waves. Especially bad are most high intensity devices that have both high intensity and high frequencies (many times in the mid to high MHz which are close to FM radio frequencies )which will certainly create incoherent radiating fields. Besides high frequency you also want to avoid dirty electricity and 60 Hz powerline frequencies which takes us now to the worst devices in all of PEMF that literally have all 3 forms of Electrosmog - The Cheap Chinese gemstone PEMF mats.
Reason #1 Not to Buy - They ALL Have a Dismally Low Slew Rate
The first and most important aspect of a PEMF signal is the slew rate. We have tested several of these Chinese mats on their highest frequency and highest intensity setting (again giving them every benefit of the doubt to maximize slew rate) and they ALL have a dismally low slew rates which even on their highest settings was at best was a little over 1 T/s and as low as around 0.4 T/s AND this was only directly above the small cheap coils. When you go a little up or to the left or right of the coils, the slew rates drop off a cliff!
The first and most important aspect of a PEMF signal is the slew rate. We have tested several of these Chinese mats on their highest frequency and highest intensity setting (again giving them every benefit of the doubt to maximize slew rate) and they ALL have a dismally low slew rates which even on their highest settings was at best was a little over 1 T/s and as low as around 0.4 T/s AND this was only directly above the small cheap coils. When you go a little up or to the left or right of the coils, the slew rates drop off a cliff!
As we saw in Point #1 of our buyers guide, we want a PEMF device with a slew rate of AT LEAST 5 T/s to overcome background noise AND to be in alignment with the minimums found in good slew rate research studies. The reason ALL these cheap Chinese gemstone mats have a dismally low slew rate is because ALL of them without exception use a 60 Hz carrier from the power company which means its always a 8.3 millisecond rise time (half period of 60 Hz from valley to peak). So even though the intensity is not bad at least right above the coil (2-10 mT), because it has a dismally slow rise time, it has a LOW SLEW RATE!! Again Slew rate matters, NOT INTENSITY!
Reason #2 Not to Buy: Cheap Rod Ferrite Coils
All these cheap Chinese gemstone mats use rod ferrite coils which give too small of an area of coverage, and a poor penetration depth. On top of that the coils have an inductance which is too high and the magnetic field flux lines coming out sideways (not into the body). These small "dollar store" coils used in all these cheap Chinese gemstone mats meet none of the important criteria for good coils we discussed in Point #2.
All these cheap Chinese gemstone mats use rod ferrite coils which give too small of an area of coverage, and a poor penetration depth. On top of that the coils have an inductance which is too high and the magnetic field flux lines coming out sideways (not into the body). These small "dollar store" coils used in all these cheap Chinese gemstone mats meet none of the important criteria for good coils we discussed in Point #2.
These cheap coils which you can find for less than a dollar on Alibaba are about the worst possible choice for transmitting PEMF signals. They might be good for portable radios and condensing magnetic fields, but they are not suited AT ALL for PEMF therapy! Our measurements of several of these mats showed significant intensities ONLY right above and closely surrounding the coils. And because of the ferrous core has a high inductance, the field gets "sucked" into the core, further diminishing the penetration depth by concentrating the field more inside the coil (this is the OPPOSITE of what you want).These are literally the worst possible coils you could design for PEMF!
Reason #3 Not to Buy: 60 Hz , 60 Hz everywhere
Now we come to perhaps the worst aspect of these cheap Chinese mats - THEY HAVE NO SIGNAL GENERATOR SO THEY SIMPLY SWITCH/PULSE YOUR 60 HZ WALL CURRENT ON AND OFF - what they call frequency is simply how many times the 60 Hz gets turned on and off a second. This is false advertising because they hide from consumers that every program is riding on 60 Hz from the power company because they don’t have a signal generator. What they call frequency is simply the repetition or pulsing rate of the 60 Hz from the power company, which in the image here is about 4 Hz repetition rate (switches 60 Hz on and off 4 times a second) . But on an oscilloscope, you always see the 60 Hz carrier signal. Any engineer or anyone with an oscilloscope can verify this.
Important Note: 60 Hz is ELECTROSMOG EMF and potentially harmful in long term exposure. There are many negative health consequences to pulsing 60 Hz, one of which is that according to at least 3 studies suppresses melatonin production, which is not only the "sleep" hormone, but also the master antioxidant at the cellular level and a power cancer protective (oncostatic) [83-85].
Now we come to perhaps the worst aspect of these cheap Chinese mats - THEY HAVE NO SIGNAL GENERATOR SO THEY SIMPLY SWITCH/PULSE YOUR 60 HZ WALL CURRENT ON AND OFF - what they call frequency is simply how many times the 60 Hz gets turned on and off a second. This is false advertising because they hide from consumers that every program is riding on 60 Hz from the power company because they don’t have a signal generator. What they call frequency is simply the repetition or pulsing rate of the 60 Hz from the power company, which in the image here is about 4 Hz repetition rate (switches 60 Hz on and off 4 times a second) . But on an oscilloscope, you always see the 60 Hz carrier signal. Any engineer or anyone with an oscilloscope can verify this.
Important Note: 60 Hz is ELECTROSMOG EMF and potentially harmful in long term exposure. There are many negative health consequences to pulsing 60 Hz, one of which is that according to at least 3 studies suppresses melatonin production, which is not only the "sleep" hormone, but also the master antioxidant at the cellular level and a power cancer protective (oncostatic) [83-85].
|
|
Reason #4 Not to Buy: Cheap Infrared
The far infrared on all these cheap Chinese mats uses cheap silicon wire which you can get on Alibaba for 10 cents a meter! Measuring the total length of the wire in a couple of these cheap full body mats, it was to be about 18 meters on the average = $1.80 for the far infrared!!! Cheap Cheap Cheap! This is the same cheap heating element found on cheap amazon heating pads! Unlike quality carbon or ceramic infrared heating elements used in quality saunas.
The far infrared on all these cheap Chinese mats uses cheap silicon wire which you can get on Alibaba for 10 cents a meter! Measuring the total length of the wire in a couple of these cheap full body mats, it was to be about 18 meters on the average = $1.80 for the far infrared!!! Cheap Cheap Cheap! This is the same cheap heating element found on cheap amazon heating pads! Unlike quality carbon or ceramic infrared heating elements used in quality saunas.
|
|
Reason #5 Not to Buy: The Great Negative Ion SCAM!!
These cheap Chinese gemstone mats claim (incorrectly) - that when heated - amethyst, obsidian, tourmaline, quartz, jade, yellow clay, etc increase negative ions. This is an absolute SCAM! Using an incredibly high precision Alpha labs negative ion counter and getting expert guidance on how to use it from the President and chief engineer himself at Alpha Labs, there were absolutely ZERO negative ions detected! Bill Lee pHD, owner and lead engineer at Alpha Labs himself did an experiment because he was tired of hearing that crystals emit negative ions, and what he found was that you need a temperature of 1100 degrees Fahrenheit to get any negative ions, but you ended up getting BOTH negative and positive ions! If you really want negative ions with PEMF, you can simply buy an inexpensive negative ion generator on amazon. Anyone Skeptical can Call Alpha Labs and Speak to them directly to confirm this!! YOU CANNOT GET NEGATIVE IONS FROM CRYSTALS!
These cheap Chinese gemstone mats claim (incorrectly) - that when heated - amethyst, obsidian, tourmaline, quartz, jade, yellow clay, etc increase negative ions. This is an absolute SCAM! Using an incredibly high precision Alpha labs negative ion counter and getting expert guidance on how to use it from the President and chief engineer himself at Alpha Labs, there were absolutely ZERO negative ions detected! Bill Lee pHD, owner and lead engineer at Alpha Labs himself did an experiment because he was tired of hearing that crystals emit negative ions, and what he found was that you need a temperature of 1100 degrees Fahrenheit to get any negative ions, but you ended up getting BOTH negative and positive ions! If you really want negative ions with PEMF, you can simply buy an inexpensive negative ion generator on amazon. Anyone Skeptical can Call Alpha Labs and Speak to them directly to confirm this!! YOU CANNOT GET NEGATIVE IONS FROM CRYSTALS!
|
|
Reason #6 Not to Buy: The Red Light Therapy Scam
Some of these cheap mats tout another gimmick - red light therapy. Upon measuring several different brands that had the red light option, I found they were less than 2 mW/cm^2, in some cases even less on par with Christmas tree lights! We used an accurate spectroradiometer (you cannot use solar meters as most reviewers use to deceive). Michael Hamblin of Harvard and other experts in Photobiomodulation (red light) research have shown you need at least 5 mW/cm^2 to be therapeutic [86-88].
Refer for example to the book Low-Level Light Therapy: Photobiomodulation
Hamblin, M, et al. (2018). Society of Photo-Optical Instrumentation Engineers (SPIE). page 10: "Assuming that the reported parameters can be trusted, studies of beam irradiance report successful tissue repair and anti-inflammatory effects from 5–50 mW/cm2 at the target tissue depth.[86-88]"
Some of these cheap mats tout another gimmick - red light therapy. Upon measuring several different brands that had the red light option, I found they were less than 2 mW/cm^2, in some cases even less on par with Christmas tree lights! We used an accurate spectroradiometer (you cannot use solar meters as most reviewers use to deceive). Michael Hamblin of Harvard and other experts in Photobiomodulation (red light) research have shown you need at least 5 mW/cm^2 to be therapeutic [86-88].
Refer for example to the book Low-Level Light Therapy: Photobiomodulation
Hamblin, M, et al. (2018). Society of Photo-Optical Instrumentation Engineers (SPIE). page 10: "Assuming that the reported parameters can be trusted, studies of beam irradiance report successful tissue repair and anti-inflammatory effects from 5–50 mW/cm2 at the target tissue depth.[86-88]"
Reason #7 Not to Buy: The Cheap Crystals Scam
Anyone knowledgeable in real gemstone therapy knows you need high clarity pure crystals with little contaminants that are properly cut to be therapeutic. The crystals in these cheap Chinese gemstone PEMF mats are of the lowest quality (see image from Alibaba here). Even worse, these crystals are heavy, hard, uncomfortable and bulky making all these Chinese gemstone PEMF full body mats over 30 pounds (some up to 40 pounds) and they are very uncomfortable to lay on!! Many elderly and physically challenged people that have been duped into buying these mats have complained how difficult it is to move them because of their bulky size and heavy weight.
Anyone knowledgeable in real gemstone therapy knows you need high clarity pure crystals with little contaminants that are properly cut to be therapeutic. The crystals in these cheap Chinese gemstone PEMF mats are of the lowest quality (see image from Alibaba here). Even worse, these crystals are heavy, hard, uncomfortable and bulky making all these Chinese gemstone PEMF full body mats over 30 pounds (some up to 40 pounds) and they are very uncomfortable to lay on!! Many elderly and physically challenged people that have been duped into buying these mats have complained how difficult it is to move them because of their bulky size and heavy weight.
Reason #8 Not to Buy: You can buy the same mats on Alibaba for a tiny fraction of the cost!
The final reason not to buy these Chinese PEMF mats is they are overpriced. Evidence they are so cheap is easily seen with a quick search on Alibaba where you'll find the same mats that are marketed in the U.S. and abroad for a fraction of the price. See image here of a mat purchased from Alibaba direct for $109 + tax which is the SAME mat as the heavily marketed Higher dose which is sold for upwards to $1000 and more! We tested and dissected both and this one from Alibaba has the same frequency settings, same coils, same mat. except the controllers look a little different (but everything is the same). If you do extensive searching on Alibaba as I have you can find mats that match or are very close to all the name brands and companies that rebrand, market and see these cheap Chinese gemstone mats.
The final reason not to buy these Chinese PEMF mats is they are overpriced. Evidence they are so cheap is easily seen with a quick search on Alibaba where you'll find the same mats that are marketed in the U.S. and abroad for a fraction of the price. See image here of a mat purchased from Alibaba direct for $109 + tax which is the SAME mat as the heavily marketed Higher dose which is sold for upwards to $1000 and more! We tested and dissected both and this one from Alibaba has the same frequency settings, same coils, same mat. except the controllers look a little different (but everything is the same). If you do extensive searching on Alibaba as I have you can find mats that match or are very close to all the name brands and companies that rebrand, market and see these cheap Chinese gemstone mats.
Fine Tuning Part 1 - Getting Rid of Unintended and Unhealthy Frequencies (60 Hz, Electrosmog, RF)
Point #1. First we must rectify the wall AC to a cleaner DC. Also, In order to minimize unwanted dirty electricity at higher frequencies, we need a clean power supply (low noise, low dirty power). Some power supplies have a LOT more dirty electricity (and even higher Mhz frequencies).
Point #2. Next we need to use an actual function or pulse generator to create a signal. This might sound obvious but ALL the cheap Chinese gemstone/crystal mats simply pulse unhealthy 60 Hz wall current (remember 60 Hz suppresses melatonin)!!
Point #3. Even if you have a signal or pulse generator, you still have to make sure the PEMF device is properly and effectively grounded so there is minimal 60 Hz electric field surrounding the coils EVEN when the device is turned off.
Point #4. The pulse or frequency generator is the beating heart of the PEMF system which will constrain the range of frequencies and magnetic field slew rates (or intensities) that the PEMF device can create. The two best drivers of PEMF are frequency/function generators and solid state pulse generators (charging a bank of capacitors). Because it is difficult to get a high enough slew rate with function generators, solid state pulse generators are the best way to get a high and therapeutic slew rate WITH enough power to drive larger coils and provide deep penetration.
Point #5. Make sure there is careful source/sink impedance matching of the RLC components (resistance, capacitance and inductance) which are the driving electronics and the driven coils and connecting cables. For example if you change the size of the coils, you have to ALSO change the driving electronics to keep it tuned. If you change the length of the connecting cables, this also changes the RLC. And if you increase the slew rate (by increasing the current and voltage), you have to make adjustments.
Point #6. Efforts need to be made to reduce radiated energy from the system at frequencies other than the intended frequencies. These unwanted frequencies include line power frequencies that capacitively couple through the power supply and into the system, impedance mismatching (and improper damping) with coils and cords, radiation from too fast of a rise time, parasitic switching in the transistors, and other miscellaneous oscillations. Also, voltage boosting circuits and processors with poor layout practices can create unwanted radiation and higher frequencies.
Point #1. First we must rectify the wall AC to a cleaner DC. Also, In order to minimize unwanted dirty electricity at higher frequencies, we need a clean power supply (low noise, low dirty power). Some power supplies have a LOT more dirty electricity (and even higher Mhz frequencies).
Point #2. Next we need to use an actual function or pulse generator to create a signal. This might sound obvious but ALL the cheap Chinese gemstone/crystal mats simply pulse unhealthy 60 Hz wall current (remember 60 Hz suppresses melatonin)!!
Point #3. Even if you have a signal or pulse generator, you still have to make sure the PEMF device is properly and effectively grounded so there is minimal 60 Hz electric field surrounding the coils EVEN when the device is turned off.
Point #4. The pulse or frequency generator is the beating heart of the PEMF system which will constrain the range of frequencies and magnetic field slew rates (or intensities) that the PEMF device can create. The two best drivers of PEMF are frequency/function generators and solid state pulse generators (charging a bank of capacitors). Because it is difficult to get a high enough slew rate with function generators, solid state pulse generators are the best way to get a high and therapeutic slew rate WITH enough power to drive larger coils and provide deep penetration.
Point #5. Make sure there is careful source/sink impedance matching of the RLC components (resistance, capacitance and inductance) which are the driving electronics and the driven coils and connecting cables. For example if you change the size of the coils, you have to ALSO change the driving electronics to keep it tuned. If you change the length of the connecting cables, this also changes the RLC. And if you increase the slew rate (by increasing the current and voltage), you have to make adjustments.
Point #6. Efforts need to be made to reduce radiated energy from the system at frequencies other than the intended frequencies. These unwanted frequencies include line power frequencies that capacitively couple through the power supply and into the system, impedance mismatching (and improper damping) with coils and cords, radiation from too fast of a rise time, parasitic switching in the transistors, and other miscellaneous oscillations. Also, voltage boosting circuits and processors with poor layout practices can create unwanted radiation and higher frequencies.
Fine Tuning Part 2 (Points 7-12) - Creating the Perfect High Slew rate signal with a large area of coverage and deep penetration into your whole body.
Point #7. It is best to put larger PEMF Coils on a full body mat in parallel circuits such that the capacitor banks for each coil are in parallel instead of series. This lowers the effective resistance and inductance of the entire PEMF circuit and makes it A LOT easier and much more efficient to achieve a higher and cleaner slew rate with less power. Also putting capacitors in parallel INCREASES the effective capacitance which also helps to increase the slew rate. Finally, this also helps to avoid coupling and high frequency oscillations that can occur between coils in series.
Point #8. Use good connections to avoid losses. This means connections that have a large surface area of contact with good conducting material (like gold) OR use a connector that has many pins or contact points which can also be a litz type of wire. This also lowers the effective resistance and helps to get a higher slew rate.
Point #9. Use a sufficient gauge wire or better yet, use Litz wire also helps to lower the effective resistance of the circuit which again makes it easier to achieve a high slew rate. More effective resistance is like riding your bike uphill. It takes more and more energy to maintain the same speed as the hill gets steeper. Similarly with increased resistance it makes it harder and harder to change the magnetic field quickly enough to maintain a good slew rate.
Point #10. A good engineer will add what are called snubber circuits to suppress or "snub" unwanted higher frequencies and excessive or unwanted resonances. An RC (resistance / capacitance) snubber circuit can be used to absorb these unwanted and unhealthy energies.
Point #11. When using large coils, add a capacitive layer over the coils. Adding a capacitive layer over the coils BOTH boosts the slew rate AND it helps to spread the field out more evenly. First having a capacitive layer boosts the voltage over the coils which then makes it easier to get a higher slew rate. This is like a turbo booster to the slew rate which is much needed because large coils provide more of an uphill effective resistance than small coils which is why there are very few PEMF companies with high slew rates on large coils using a medium range intensity. Secondly the capacitive layer smooths out the slew rate and intensity and reduces hot and cold spots found on MOST PEMF devices. It accomplishes this by providing a wider conductive area (the geometry of a wide conductor makes the field more uniform. When done right, larger coils allow for more area and deeper penetration so your ENTIRE body gets healing energy ALL THE WAY THROUGH from head to toe and back to belly.
Point #12. It's best to use a higher current and lower voltage approach versus higher voltage and lower current. This usually goes hand in hand with using LESS TURNS in the coils (which you can do with a higher current/lower voltage approach). Because each turn adds to the inductance and effective resistance, more turns IS NOT BETTER unlike some so called PEMF experts incorrectly state! Note: almost all the cheaper PEMF devices under $3000 are underpowered and have too LOW of a slew rate.
Point #7. It is best to put larger PEMF Coils on a full body mat in parallel circuits such that the capacitor banks for each coil are in parallel instead of series. This lowers the effective resistance and inductance of the entire PEMF circuit and makes it A LOT easier and much more efficient to achieve a higher and cleaner slew rate with less power. Also putting capacitors in parallel INCREASES the effective capacitance which also helps to increase the slew rate. Finally, this also helps to avoid coupling and high frequency oscillations that can occur between coils in series.
Point #8. Use good connections to avoid losses. This means connections that have a large surface area of contact with good conducting material (like gold) OR use a connector that has many pins or contact points which can also be a litz type of wire. This also lowers the effective resistance and helps to get a higher slew rate.
Point #9. Use a sufficient gauge wire or better yet, use Litz wire also helps to lower the effective resistance of the circuit which again makes it easier to achieve a high slew rate. More effective resistance is like riding your bike uphill. It takes more and more energy to maintain the same speed as the hill gets steeper. Similarly with increased resistance it makes it harder and harder to change the magnetic field quickly enough to maintain a good slew rate.
Point #10. A good engineer will add what are called snubber circuits to suppress or "snub" unwanted higher frequencies and excessive or unwanted resonances. An RC (resistance / capacitance) snubber circuit can be used to absorb these unwanted and unhealthy energies.
Point #11. When using large coils, add a capacitive layer over the coils. Adding a capacitive layer over the coils BOTH boosts the slew rate AND it helps to spread the field out more evenly. First having a capacitive layer boosts the voltage over the coils which then makes it easier to get a higher slew rate. This is like a turbo booster to the slew rate which is much needed because large coils provide more of an uphill effective resistance than small coils which is why there are very few PEMF companies with high slew rates on large coils using a medium range intensity. Secondly the capacitive layer smooths out the slew rate and intensity and reduces hot and cold spots found on MOST PEMF devices. It accomplishes this by providing a wider conductive area (the geometry of a wide conductor makes the field more uniform. When done right, larger coils allow for more area and deeper penetration so your ENTIRE body gets healing energy ALL THE WAY THROUGH from head to toe and back to belly.
Point #12. It's best to use a higher current and lower voltage approach versus higher voltage and lower current. This usually goes hand in hand with using LESS TURNS in the coils (which you can do with a higher current/lower voltage approach). Because each turn adds to the inductance and effective resistance, more turns IS NOT BETTER unlike some so called PEMF experts incorrectly state! Note: almost all the cheaper PEMF devices under $3000 are underpowered and have too LOW of a slew rate.
Point #11: Unnecessary Accessories [SAVE YOUR MONEY]
PEMF companies and energy medicine companies in general are notorious for offering a wide array of accessories and upsells. While some are nice to have and perhaps worth the extra expense, many upsells are mediocre items that other companies make better or outright gimmicks with no place in a brochure. In this section we'll give insights into which accessories are worth having or at least worth considering, and which are hard passes. The key point we teach people when buying ANY energy medicine device is focused on what the company is KNOWN for and PASS on items they are NOT known for. Simple, right?
Necessary Components and Accessories
Every PEMF device I have tried will come with at least a control unit, a power supply and at least one applicator or coil. The first most obvious accessory to add is additional local applicators so you can cover larger areas, small areas and applicators that have a helmholtz arrangement. Another good accessory is GOOD far infrared heating that has low EMF which is both pampering and therapeutic. When I say GOOD, I mean using carbon fiber heating elements like good infrared saunas. All the cheap Chinese gemstone mats use cheap silicone wire and have measurable electric field dirty electricity.
PEMF companies and energy medicine companies in general are notorious for offering a wide array of accessories and upsells. While some are nice to have and perhaps worth the extra expense, many upsells are mediocre items that other companies make better or outright gimmicks with no place in a brochure. In this section we'll give insights into which accessories are worth having or at least worth considering, and which are hard passes. The key point we teach people when buying ANY energy medicine device is focused on what the company is KNOWN for and PASS on items they are NOT known for. Simple, right?
Necessary Components and Accessories
Every PEMF device I have tried will come with at least a control unit, a power supply and at least one applicator or coil. The first most obvious accessory to add is additional local applicators so you can cover larger areas, small areas and applicators that have a helmholtz arrangement. Another good accessory is GOOD far infrared heating that has low EMF which is both pampering and therapeutic. When I say GOOD, I mean using carbon fiber heating elements like good infrared saunas. All the cheap Chinese gemstone mats use cheap silicone wire and have measurable electric field dirty electricity.
Unnecessary Gimmicks or Best to Pass
-Light and Sound Systems - Buy light and sound from a light and sound company.
-Biofeedback - Buy from a Company that specializes in Biofeedback
- pulse oximeters - Buy medical grade from a medical supply place
-PEMF Mats you can Sleep on - Totally unnecessary and potentially harmful if the device has measurable dirty electricity (like electric blanket studies showing risk of Leukemia). It turns out good PEMF you don't want OR need to sleep on all night anyway.
-Red light therapy - Usually Cheap Chinese Mats but I have seen some quality PEMF companies try to include this. The problem is the irradiance/power/brightness is WAY too low to be therapeutic.
-Crystals / Negative ions - Scam - Usually Cheap Chinese Mats - again as we showed you CANNOT get negative ions from crystals. If you want negative ions, buy a good negative ion generator.
-Microcurrent Attachments - Many Cheap Chinese Mats have microcurrent add-ons... EEKS, What's worse than 60 Hz magnetic fields? Ans: 60 Hz direct current!!
-Rife Machine companies selling PEMF add-ons. Here the gimmick is PEMF. You do NOT want high frequency RIFE in PEMF. My experience with RIFE machine companies trying to include PEMF is that they use a POOR slew rate sine waves, frequencies that are too high, and poorly engineered and ineffective coils.
-Smartphone options
- Avoid any PEMF device that is powered by a PHONE = electrosmog and ineffective
-All voice activated features are total gimmicks with no research backing
-Expensive Chairs and Beds claiming multiple therapies like PEMF + Vibroacoustic + Far Infrared + Oxygen or Molecular Hydrogen + ETC, ETC. Many times when you add up the total of the therapies it is MUCH less than these all in one bed.
-Light and Sound Systems - Buy light and sound from a light and sound company.
-Biofeedback - Buy from a Company that specializes in Biofeedback
- pulse oximeters - Buy medical grade from a medical supply place
-PEMF Mats you can Sleep on - Totally unnecessary and potentially harmful if the device has measurable dirty electricity (like electric blanket studies showing risk of Leukemia). It turns out good PEMF you don't want OR need to sleep on all night anyway.
-Red light therapy - Usually Cheap Chinese Mats but I have seen some quality PEMF companies try to include this. The problem is the irradiance/power/brightness is WAY too low to be therapeutic.
-Crystals / Negative ions - Scam - Usually Cheap Chinese Mats - again as we showed you CANNOT get negative ions from crystals. If you want negative ions, buy a good negative ion generator.
-Microcurrent Attachments - Many Cheap Chinese Mats have microcurrent add-ons... EEKS, What's worse than 60 Hz magnetic fields? Ans: 60 Hz direct current!!
-Rife Machine companies selling PEMF add-ons. Here the gimmick is PEMF. You do NOT want high frequency RIFE in PEMF. My experience with RIFE machine companies trying to include PEMF is that they use a POOR slew rate sine waves, frequencies that are too high, and poorly engineered and ineffective coils.
-Smartphone options
- Avoid any PEMF device that is powered by a PHONE = electrosmog and ineffective
-All voice activated features are total gimmicks with no research backing
-Expensive Chairs and Beds claiming multiple therapies like PEMF + Vibroacoustic + Far Infrared + Oxygen or Molecular Hydrogen + ETC, ETC. Many times when you add up the total of the therapies it is MUCH less than these all in one bed.
Point #12: PEMF DEVICE and applicators assembled with strict quality standards
The quality of a PEMF device's manufacturing and assembly is pivotal for ensuring its longevity, dependability and optimal performance over time. In the assessment of PEMF devices, we must consider various aspects of assembly quality:
Materials: Opt for PEMF devices constructed from robust and durable materials. These materials are crucial for enduring heavy usage and ensuring a prolonged service life.
Electronic Components and Engineering: Ensure that the bed’s electrical elements, power units and control mechanisms, are procured from established manufacturers and designed to exact specifications with high lifecycle components to meet the rigors of both home and commercial utilization. See point #10 on more details for proper engineering.
Assembly Process: The PEMF device should be assembled with precision-driven manufacturing practices and stringent quality control protocols, aiming to secure uniform performance and minimize the potential for defects or operational failures.
Regulatory Compliance: The PEMF device must adhere to pertinent industry standards and regulations which affirms its safety and performance efficacy.
Testing and Certification: The PEMF device should be subjected to exhaustive testing both during assembly and before shipment. Slew rate tests with the proper equipment should be across the WHOLE MAT to verify a uniform coverage and ALSO down above the mat to verify penetration depth. All this insures both a high slew rate across and within the whole body AND shows there are no unwanted frequencies that are electrosmog.
The quality of a PEMF device's manufacturing and assembly is pivotal for ensuring its longevity, dependability and optimal performance over time. In the assessment of PEMF devices, we must consider various aspects of assembly quality:
Materials: Opt for PEMF devices constructed from robust and durable materials. These materials are crucial for enduring heavy usage and ensuring a prolonged service life.
Electronic Components and Engineering: Ensure that the bed’s electrical elements, power units and control mechanisms, are procured from established manufacturers and designed to exact specifications with high lifecycle components to meet the rigors of both home and commercial utilization. See point #10 on more details for proper engineering.
Assembly Process: The PEMF device should be assembled with precision-driven manufacturing practices and stringent quality control protocols, aiming to secure uniform performance and minimize the potential for defects or operational failures.
Regulatory Compliance: The PEMF device must adhere to pertinent industry standards and regulations which affirms its safety and performance efficacy.
Testing and Certification: The PEMF device should be subjected to exhaustive testing both during assembly and before shipment. Slew rate tests with the proper equipment should be across the WHOLE MAT to verify a uniform coverage and ALSO down above the mat to verify penetration depth. All this insures both a high slew rate across and within the whole body AND shows there are no unwanted frequencies that are electrosmog.
Point #14: Is the device comfortable, flexible, convenient and easy to use
Making sure a PEMF device is comfortable, flexible and easy to use is important because you are more likely to use it. If a PEMF mat is hard and uncomfortable like the Chinese crystal PEMF mats, it is not as enjoyable and you are less likely to use something that is not cozy to lay on. Flexible coils are important so you can put your full body mat on a bed or couch without having to worry about the coils.
Finally a PEMF device should be simple and easy to use while still containing enough functionality to do the job right. If you have a quality square wave with a high slew rate and good coils, the good news is you don't need much more in the control unit. All that is needed is a way to control repetition rate frequencies and the intensity. To make this even more simple, a good PEMF company will have fast start programs with repetition rates already programmed to match your circadian rhythms like energizing beta frequencies in the morning and relaxing theta and delta at night like we talked about in point #3.
Making sure a PEMF device is comfortable, flexible and easy to use is important because you are more likely to use it. If a PEMF mat is hard and uncomfortable like the Chinese crystal PEMF mats, it is not as enjoyable and you are less likely to use something that is not cozy to lay on. Flexible coils are important so you can put your full body mat on a bed or couch without having to worry about the coils.
Finally a PEMF device should be simple and easy to use while still containing enough functionality to do the job right. If you have a quality square wave with a high slew rate and good coils, the good news is you don't need much more in the control unit. All that is needed is a way to control repetition rate frequencies and the intensity. To make this even more simple, a good PEMF company will have fast start programs with repetition rates already programmed to match your circadian rhythms like energizing beta frequencies in the morning and relaxing theta and delta at night like we talked about in point #3.
Point #18: High End Customer Service, Training and Support
Along with having an effective PEMF device with a high slew rate that is comfortable and easy to use, it is also important to have guidance and experienced training and support on how to use a PEMF device to get the best results. While good PEMF devices can be easy to use, there is still the question of dosage or dosimetry. That is, how many times a day, for how long and at what intensity or repetition rate frequency. Having experienced and competent support will assure you that you will get results using a good PEMF device.
Sadly many of the cheap PEMF mats, especially the Chinese crystals mats are sold online and on Amazon or ebay and you not only get a cheap and ineffective device, you don't get good service and support, sometimes none at all! We have talked to many people who have purchased a top selling cheap crystal PEMF mat and not only did they not answer the phone, they were not answering emails either! Many companies will spend time with you on the sales side, but as soon as you purchase there is little and sometimes no support. In the case of PEMF devices sold through MLM, the support is dependent on the person you are purchasing from, so make sure to work with someone committed and not just doing PEMF as a side hobby. Another red flag is companies that sell online that just have emails and contact forms but no phone numbers and real people to talk to. If this is all they have in the buying process you can almost be guaranteed you will receive little, if any support, so buyer beware! Trusted companies also provide you with real contact people, faces and phone numbers! The bottom line is that it is worth it to pay more for a company that offers not only a great product, but top-notch service, training and support
Along with having an effective PEMF device with a high slew rate that is comfortable and easy to use, it is also important to have guidance and experienced training and support on how to use a PEMF device to get the best results. While good PEMF devices can be easy to use, there is still the question of dosage or dosimetry. That is, how many times a day, for how long and at what intensity or repetition rate frequency. Having experienced and competent support will assure you that you will get results using a good PEMF device.
Sadly many of the cheap PEMF mats, especially the Chinese crystals mats are sold online and on Amazon or ebay and you not only get a cheap and ineffective device, you don't get good service and support, sometimes none at all! We have talked to many people who have purchased a top selling cheap crystal PEMF mat and not only did they not answer the phone, they were not answering emails either! Many companies will spend time with you on the sales side, but as soon as you purchase there is little and sometimes no support. In the case of PEMF devices sold through MLM, the support is dependent on the person you are purchasing from, so make sure to work with someone committed and not just doing PEMF as a side hobby. Another red flag is companies that sell online that just have emails and contact forms but no phone numbers and real people to talk to. If this is all they have in the buying process you can almost be guaranteed you will receive little, if any support, so buyer beware! Trusted companies also provide you with real contact people, faces and phone numbers! The bottom line is that it is worth it to pay more for a company that offers not only a great product, but top-notch service, training and support
Point #19: Does the device have business and marketing support (and a good affiliate program).
PEMF Therapy has gained significant traction within the health and wellness sector, presenting numerous potential advantages for businesses and clients. A good PEMF company can offer guidance to business owners who want to provide and profit from PEMF as a service for the clinic, spa, wellness company.
Also because the advantages of a PEMF really come from daily and consistent use, having access to a good affiliate program allows business and affiliate marketers the opportunity to make a significant side income as long as the affiliate percentages are generous. Too many companies either have no affiliate program or offer a measly 5% for referrals. Ideally, you would want an affiliate program that offers at least 10-20% per sale.
For people just wanting to experience the daily benefits of PEMF, clearly the most important thing is to get a GOOD PEMF device, but if it works for you and you tell your friends and family about it, it is always nice to know you can be rewarded generously for your referrals.
PEMF Therapy has gained significant traction within the health and wellness sector, presenting numerous potential advantages for businesses and clients. A good PEMF company can offer guidance to business owners who want to provide and profit from PEMF as a service for the clinic, spa, wellness company.
Also because the advantages of a PEMF really come from daily and consistent use, having access to a good affiliate program allows business and affiliate marketers the opportunity to make a significant side income as long as the affiliate percentages are generous. Too many companies either have no affiliate program or offer a measly 5% for referrals. Ideally, you would want an affiliate program that offers at least 10-20% per sale.
For people just wanting to experience the daily benefits of PEMF, clearly the most important thing is to get a GOOD PEMF device, but if it works for you and you tell your friends and family about it, it is always nice to know you can be rewarded generously for your referrals.