“Selenium In Nutrition”, 1981-07-01 (; similar):
Every useful substance—water, salt, air, nutrients, and vitamins as well as therapeutic agents—has a range below which it loses effectiveness and above which it becomes harmful. With selenium the optimum range is fairly narrow, and the penalties for transgression can he dramatic.
…Selenium has had dramatic acceptance in animal husbandry. However, in those countries where selenium content is minimal, the farmer who feeds his cattle selenium supplement is often himself the victim of infarctions that would have been prevented by a selenium supplement. Knowledge has gradually accumulated, and the hazards defined. Use of selenium in human nutrition and preventive medicine has become feasible.
While most of the United States has adequate selenium, some natural deficiency occurs in areas where heavy rains are common. Inclusion of selenium in dietary supplements was discussed at the U. S. Quartermaster Conference on Antioxidants in Natick, MA in 1979. A detailed specific geriatric formula in which selenium was one ingredient was published in the proceedings.15 This formula is not patented and has not been on the market, but has been used regularly by some persons for several years with apparent satisfaction.
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