Overview: Selenium is a mineral that is commonly used to prevent or treat low levels of selenium in the body. It is available over the counter as a supplement and is usually well tolerated. But taking ...

Selenium is an essential trace mineral that is important for many functions in the body. Recent research suggests that selenium has anti-aging properties and may even protect against age-associated ...

Selenium deficiency refers to not having enough selenium in your system. Symptoms may include fatigue, muscle weakness, and infertility, among others. The amount of selenium in food sources is largely ...

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 ...