Selenium is a mineral that may support several aspects of human health. Most adults need around 55 micrograms (mcg) per day. Sources include nuts, eggs, and some fish. Selenium is a nutrient that ...

Selenium supports thyroid hormone production and immune system processes. Some studies link low selenium levels with higher thyroid disease risk, including thyroid eye disease. Studies using 100 ...

Selenium functions through selenoproteins, several of which are oxidant defense enzymes. The Recommended Dietary Allowance (RDA) for selenium is based on the amount needed to maximize synthesis of the ...