Asking the “penetration depth” question is perfectly reasonable for PEMF users. We all want to know: Is PEMF system “X” powerful enough to reach deeply enough to have desired effect “Y”.
This is a very reasonable question, but it attracts a lot of misleading answers from people trying to market PEMF.
First, let’s calibrate our expectations:
I know I say this all the time, but this is the honest starting point for questions like this because the “data” and claims from almost all PEMF marketers are almost always fraudulent and baseless.
One exception to this is (sometimes) Dr. Pawluk. In my opinion, he does actually know quite a lot about PEMF from the clinical effectiveness perspective. The problem is that he does not, in my opinion, understand electro-magnetism. I have tried to explain it to him many times, but he resists the fact that “Gauss” is the wrong parameter to use when discussing biological effects of PEMF. The problem is that, as a clinician, one of the only PEMF parameters he has access to from any given PEMF product is the “Gauss” claim from the manufacturer. When you clinically compare manufacturer claims of “Gauss” with clinical effectiveness, there will usually be a correlation because “Gauss” will correlate with the correct electro-magnetic parameter even for hyper-inefficient PEMF systems.
This gets extremely difficult to explain to non-scientists because, honestly, electro-magnetism is perhaps the most difficult thing to understand in all of science. It’s not something you can grasp from watching a few YouTube videos. And bio-electro-magnetism has the added problem that it is simultaneously:
1- Just about the most complex field of knowledge known to humanity
and
2- Not well understood even by the smartest people who have ever lived because we have incomplete scientific knowledge about its biological mechanisms.
Here is the proof of the real complexity of electro-magnetism:
If a person fails out of college or graduate school when studying physics or electrical engineering, it will be because they failed their first comprehensive course in electro-magnetism. It is that complex and difficult. Really. And that is before you add the nuance and complexity of “Bio-…”
I have been hammering on this for over 25 years, and I think I might be starting to get a glimmer of understanding. Maybe. Just a tiny bit.
So in general we all have to accept the fact that there are no simple answers, and a lot of unknowns. In my opinion, when someone makes specific claims using specific PEMF parameters, it is nothing more than marketing B.S.
Now that we are calibrated:
I think your insights are correct where you say “I do not know the source of his data but it seems to be comparing different manufacturers products of different frequencies, power levels (gauss), wave forms & durations.”
You are spot-on correct. Add to this the fact that for almost all PEMF systems, not even the manufacturer knows each of the parameters of their own products on your list. Basically, we have a lot of “known-unknowns” but even more “unknown-unknowns” when it comes to PEMF.
My opinion: Dr. Pawluk’s chart of penetration depth is the best he could do given the paucity of reliable and complete data and lack of understanding of fundamental biophysical mechanisms. But I also do not think it is exactly correct for at least two reasons:
1- He uses the wrong electro-magnetic parameter.
2- Individual human variability in their sensitivity to PEMF does not allow us to assign a single number to this question.
But I think his information has some value because it is based on clinical observations of what works and what does not. I think it would be correct to say that this is based on his clinical observations and educated guesses. I am actually OK with that, given that the alternative is total ignorance. On the other hand, I would not accept this educated guess from anyone other than Dr. Pawluk, such as a marketer who has little or no clinical experience with PEMF by comparison.
BOTTOM LINE: We should not look for a single number to describe “penetration depth”.
To address your practical questions and observations:
Deeper penetration, stacking coils: yes, go ahead and stack coils as you describe, and then be sure to check between each pair of coils using the hexagonal coil tester to be sure that the intensity is increasing, which will be indicated by increasing brightness of the flashing green LEDs. If the brightness decreases, just flip over one of the coils and test it the same way again.
“In your estimation, how deep would 4 stacked pairs of coils be able to penetrate?”: In my experience (and based on many reports to me from other people) it seems to penetrate pretty deeply with good effect at least 5 or 6 inches. Keep in mind that the anti-inflammatory effect will be stronger on tissues closer to the coils, which will have a compounding effect on the anti-inflammatory effect at the deeper target tissue.
Your observations following “Torn Meniscus” I think are very important. Sometimes PEMF will cause joint pain, so it is necessary to use reduced intensity and duration. This happens to me all the time. I keep making the same mistake. It’s human nature. Too much is too much.
Neck and Stem cells: I think you are correctly looking at this as a long process where the tissue will be regenerating, so you should expect a long period with some level of discomfort, and using PEMF daily but at a low intensity is probably the best strategy. I would suggest trying Omni-8 at very low intensity. If you are not feeling any effect, that is probably doing the most long-term good.
M1 on hip - Yes, high settings unfortunately burn through batteries much more quickly. It’s all a design trade-off.