Selenium is vital for the thyroid gland and immune system. A deficiency can cause tiredness, hair loss, recurring sickness, muscle weakness, and brain fog. Eating selenium-rich foods such as Brazil ...

Brazil nuts contain high levels of selenium that can cause toxicity and lead to symptoms such as digestive upset and fatigue ...

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 ...

Aliasger K. Salem receives funding from the National Institutes of Health. He serves on the Executive Board of the American Association for Pharmaceutical Scientists. Selenium is a nutrient that plays ...