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 ...

Just 3 oz of tuna contains 167% of a person’s daily selenium needs. This recipe pairs a spiced, flavorful tuna steak with a nutritious salsa to offer a balanced meal. A serving of 3 oz of light ...

“Selenium is an essential mineral that helps to support your metabolism, immune system, and cardiovascular health,” says Nasser. “Although needed in small amounts, it’s essential for your overall well ...