Because the amount of dietary selenium is dependent on the mineral content of the soil in which food is grown, some countries, such as Finland, have fortified their selenium-deficient soil with the mineral. In other parts of the world, scientists have chosen to bypass this method and have advocated the supplementation of drinking water with selenium. And, because the selenium content of soil is highly variable, there are some areas of the world where the soil has too much selenium, and a segment of the population has experienced symptoms of selenium toxicity. All rights reserved. Reproduction in whole or in part without permission is prohibited.
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