Selenium (Se) is a trace mineral that supports cognition, immune system function, and fertility.
Selenium is a nutrient that plays a key role in maintaining thyroid hormone metabolism and DNA synthesis and protecting the body from oxidative damage and infection.
The amount of selenium in food varies greatly and depends on its concentration in the soil and water. Selenium is often found in whole grains and animal products such as fish and eggs. The body typically stores selenium mostly in skeletal muscles.
Selenium’s antioxidant activity may help reduce the risk of both age-related cognitive decline and impairments that result from conditions such as Alzheimer’s disease.
Selenium also has an important role in maintaining healthy thyroid function.
Selenium’s role in DNA repair means that it may play a role in cancer prevention.