Selenium was considered a toxic element by the end of the ’50s, but now it is known as a powerful micronutrient, mineral, and antioxidant. Benefits: A powerful antioxidant that protects cell membranes from lipid peroxidation Low intake of selenium is associated with higher levels of various degenerative diseases Supports cardiovascular health Maintains a healthy immune system Helps the body to get rid of toxic heavy metals Supports a healthy brain function Sustains joints health Selenium was considered a toxic element by the end of the ’50s, but now it is known as a powerful micronutrient, mineral, and antioxidant. Although high doses are really toxic (more than one milligram per day), it is an important element of nutrition. Selenium is an essential part of the antioxidant glutathione peroxidase enzyme. It helps to protect cells against the effects of free radicals produced during normal oxygen metabolism.