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The most important consideration is what you hope to treat. The right system will depend on that answer

Always remember the two most important points to consider are intensity of the magnetic field and frequency. You don’t need to think about frequency with higher intensity pulse systems.

Terminology is important to understand PEMFs and be able to compare them and use them. The two most important terms are Gauss for intensity and hertz for frequency. There are two types of PEMF systems: frequency systems and those with individual pulses.

There are 2 types of PEMF pulse systems.

One is like the strike of a hammer or hitting a gong. Like a gong they produce a series of smaller tones or waves after the “gong” strike.

The other one is digital with a very clean single electrical pulse. These pulses are individually repeated. The blue line is the magnetic pulse. It is sharp and distinct with no additional frequencies at the peak.

As I have frequently said, intensity of a PEMF magnetic system is one of the most critical factors for helping with health problems. Intensity is measured in Gauss, micro Tesla or mT. By way of example, the earth’s magnetic field is about half a Gauss or 50 micro Tesla. This is considered a very low intensity. An MRI machine, which is used for diagnosis work, is about 20,000 – 40,000 Gauss.

The maximum magnetic intensity of most frequency systems varies from about ½ a Gauss or 50 micro Tesla to 1500 Gauss or 150 mT. Most pulse-based systems vary from a maximum intensity of 2000 Gauss to over 10,000 Gauss. Generally, pulse-based systems are extremely low-frequency but high intensity. The frequency of the repeating pulses is usually between 1 to 10 per second.

The frequency systems can be thought of as waves on a pond or lake or a tuning fork.

Frequency-based systems most often range from 1-1000 Hz, or one pulse per second to 1000 pulses per second. By comparison cell phones pulse at the rate of more than 1 GHz or 1 billion pulses per second.

PEMF systems usually allow control over intensity within the limits of the system. Some PEMF systems don’t vary their intensity. I usually recommend PEMF systems that are able to control intensity. Some have a limited number of intensity settings and some have many intensity settings up to the maximum. Most of the time I recommend the maximum intensity to optimize the benefits and decrease the treatment time.

Intensity of a PEMF signal drops off very rapidly based on the inverse square law. This becomes important in considering the problem being treated and how deep into the body the magnetic signal needs to go to be effective. This graphic shows how quickly I PEMF signal drops off in intensity. A magnetic signal at 1000 gauss is already 240 Gauss at a ½ an inch [1 cm] into the body. By the time it reaches 8 cm [about 8 ¼ inches] into the body it is about 0.8 Gauss. Since I routinely recommend PEMFs for all kinds of problems of people may have, even in the same person, higher intensity becomes very important in achieving the best results.

Most people who come to me for advice on PEMF systems have already tried many other therapies without the benefits they need. They are frustrated and clearly are looking for alternatives to help them. They have almost always read about PEMFs on the Internet and how they can help so many different problems. There are so many systems available now. This can be very frustrating because there are so many people promoting their own particular system, it is confusing about what works best.

After talking to somebody about what their needs are, I will give several system choices.

I will go over the intensities, whether there are programs, the advantages and disadvantages of the system and when to expect results with these choices.

They may have had an idea of which system they wanted to buy, usually based on cost. After discussion about the intensities, how the device would have to be used and the likely time it would take to heal with each device, usually based on intensity, people often change their minds. Because people have an idea in their minds of what they can afford, they don’t take into account the realities of their problems, their body’s capacity to heal and the way the magnetic fields work. After discussion, many people will actually make the decision to get a better PEMF system.

Sometimes the reverse is true. Sometimes people don’t need to have the more expensive system and can get by with something less expensive which can be just as effective for their particular need. A PEMF system is never wasted no matter what somebody gets. Both high and low intensity are useful. It’s just that the results will depend on the factors I already mentioned.

The most common mistake people make is thinking that magnetic fields can provide instant results. Since magnetic fields work most to heal the body, the body takes time to do this.

The body will do this in its own time based on its healing capacity and what is needing to be healed. A fracture or sprained ankle won’t heal overnight. The body takes time to heal after surgery.

Look at professional athletes, who are young, healthy, eat properly and have a huge amount of support around them to help them to recover from injuries. They still take time to heal and can often be out for a season. PEMFs shorten healing, often dramatically. Getting the right PEMF system is essential. Generally, the higher the intensity of the PEMF system, the faster the healing time.

We have put together a Buyer’s Guide for people who want to compare PEMF systems and what they should consider.

Sections 4 and 5 in the book have more detail on how to select and use a PEMF system.

There is a Table in section 4 comparing the many types of PEMF devices I have used and are available. This picture may be too small to read in detail, but will give you a sense of what it contains.

Now let’s go to the next section.


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