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I was listening to the radio one day when I heard what seemed to be a radio show about products from a company called Purity Products. In fact, it was a radio infomercial for their magnetic health products.

They made numerous fantastic health claims for their products, more than I can recall. I phoned the company at 888-769-7873 to ask about documentation of their claims. They referred me to Bill Sardi ( user bsardi at domain

After I contacted him, he sent me the following synopses of studies purportedly supporting those claims:

In the above studies, there are occasional claims that a result is significant. Bear in mind that this is a technical term. To a lay person, this suggests that the effect of the treatment is more than minimal, but in this context, significant is a statistical term meaning that the results obtained were great enough to be considered technically valid for the size of the sample studied.

A sufficiently large sample size will generate significant results for treatments which have only minimal effects. Conversely, a treament that's actually very effective may not yield significant results if the sample size is too small.

One reason to be skeptical about magnetic treatments is the abundance of claims made. Studies such as these can indicate whether or not magnets have an effect on pain, but they can't directly help to determine how they might do this.

And that's the real mystery. Nobody suggests that magnets chemically interact with the body. Instead, proponents claim that there's a physiclal force (i.e. magnetism) that acts on the body. Problem is, there's no energy associated with static magnets that are stationery with respect to the object they're purporting to act upon.

There is, however, additional energy required for the body to move the magnets. The magnets could also provide a cooling effect. But these effects would be the same for any piece of metal of similar shape and weight. Many of the anecdotal reports of benefits from using magnets could be accounted for by these effects.

For what it's worth, here's Bill Sardi's personal note that he included along with the reports listed above:

My research showed that magnets help improve circulation (via the fact that iron-rich blood is attracted to magnets). Here are some reports. Note that a report in the Journal of the American Medical Assn. was negative, but many doctors wrote in following the report to say their patients have experienced benefits.

Other studies:

Comments from web site visitors:

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