Selenium is an essential trace element associated with several biological functions, such as antioxidant defense, development, and support of the immune system. Cellular health lies in its binding to form an integral part of selenoproteins, which is a group of enzymes pertinent in providing antioxidant protection and regulating oxidative stress. Such proteins lessen free radical injury that, left unchecked, might impair organ function.
Selenium supports glutathione peroxidase, a powerful antioxidant enzyme that protects cells from oxidative damage. Selenium aids in the production and metabolism of thyroid hormones by converting thyroxine (T4) into its active form, triiodothyronine (T3). It boosts the immune response by promoting the activity of T-cells.