Where can one find selenium occurring naturally? Is it only in one geographical region?
by 
Anonymous
ANSWERS: 1
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Researchers know that soils in the high plains of northern Nebraska and the Dakotas have very high levels of selenium. People living in those regions generally have the highest selenium intakes in the United States (U.S.) [8]. In the U.S., food distribution patterns across the country help prevent people living in low-selenium geographic areas from having low dietary selenium intakes. Soils in some parts of China and Russia have very low amounts of selenium. Selenium deficiency is often reported in those regions because most food in those areas is grown and eaten locally. Reference Link: http://ods.od.nih.gov/factsheets/selenium.asp
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