Selenium

Seleniumis a mineral that works as an antioxidant to protect body cells from damage that might lead to heart disease, some cancers and other diseases of aging2. It also has been found to be important for the immune system and fertility in men3. Many foods of animal origin and grains are good sources of selenium, but mushrooms are among the richest sources of selenium in the produce aisle and provide 822 mcg per serving4. This is good news for vegetarians, whose sources of selenium are limited.