Selenium is a trace mineral that our bodies need to maintain good health. It's found naturally in soil and many foods. Consuming selenium helps with thyroid function, immune health, and defends our bodies from stress and chronic diseases.

In the ABCs of micronutrients, this mineral is often overlooked. "Selenium may not get as much attention as other vitamins and minerals, but it plays an important role in the body," Vanessa King, registered dietitian and spokesperson for the Academy of Nutrition and Dietetics, tells TODAY.com.

Selenium acts as a powerful antioxidant in the body. It's a key component of special proteins that help the body make enzymes that play an important role in thyroid metabolism, immune function, and DNA synthesis, per the National Institutes of Health Office of Di

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