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This is not a medical site. Information on
this page is provided on a "best efforts" basis for interest
only and does not constitute personal advice. Selenium 100mcg with vitamins A, C & E Selenium is an essential trace mineral in the human body. This nutrient is an important part of antioxidant enzymes that protect cells against the effects of free radicals that are produced during normal oxygen metabolism. The body has developed defenses such as antioxidants to control levels of free radicals because they can damage cells and contribute to the development of some chronic diseases. Selenium is also essential for normal functioning of the immune system and thyroid gland. Selenium activates an antioxident enzyme called glutathione peroxidase, which may help protect the body from cancer. Yeast-derived forms of selenium have induced "apoptosis" (programmed cell death) in cancer cells in test tubes and in animals. A double-blind trial that included over 1,300 people found those given 200 mcg of yeast-based selenium per day for 4.5 years had a 50% drop in the cancer death rate compared with the placebo group. Another study found that men consuming the most dietary selenium (assessed indirectly by measuring toenail selenium levels) developed 65% fewer cases of advanced prostate cancer than did men with the lowest levels of selenium intake. Selenium is also essential for healthy immune
functioning. Selenium supplementation has reduced the incidence
of viral hepatitis in selenium-deficient populations, presumably
by enhancing immune function. Even in a non-deficient population
of elderly people, selenium supplementation has been found to stimulate
the activity of white blood cells-primary components of the immune
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