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 found in the soil. It naturally appears in water and some foods. While people only need a very small amount, selenium plays a key role in your metabolism. Brazil nuts are are one ...

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 ...