Ever since humans discovered fire, our activities have been releasing a "dog's breakfast" of unnatural chemistry. The list has grown to well over 75,000 free elements, compounds and pharmaceuticals. Many of these are acidic, electron-hungry oxidants and free radical generators.
There is no safe level of mercury. Mercury is the most toxic naturally occurring substance on the planet, yet, according to the EPA, there is currently over 1 ton of mercury from amalgam fillings in the mouths of Americans. Over 67 million Americans exceed the exposure of mercury vapors considered "safe" by the EPA because of the presence of amalgams in their teeth.
New research is revealing something remarkable about why the body sweats. Beyond its obvious role in regulating body temperature, sweating has been found to facilitate the bodily elimination of accumulated heavy metals and petrochemicals, indicating that if we want to be healthy we should put regular effort into doing more sweating.