Selenium is a trace mineral, which means that the body only needs a small amount of it. It is found naturally in foods or as a supplement.

Selenium is an essential component of various enzymes and proteins, called selenoproteins, that help to make DNA and protect against cell damage and infections; these proteins are also involved in reproduction and the metabolism of thyroid hormones. Selenium is a component of selenoproteins and enzymes. These have antioxidant properties that help to break down peroxides, which can damage tissues and DNA, leading to inflammation and other health problems. 

The amount of selenium in foods can vary widely depending on the selenium content of the soil in which it is grown. Plant foods obtain selenium from soil, which will then affect the amount of selenium in animals eating those plants. Protein foods from animals are generally good sources of selenium. Seafood, organ meats, and Brazil nuts are the foods highest in selenium although Americans obtain most of their selenium from everyday staples, like breads, cereals, poultry, red meat, and eggs.

Foods with high sources of selenium:

>Brazil nuts

>Fin Fish and Shellfish

>Beef

>Turkey

>Chicken

>Fortified cereals

>Whole-wheat bread

>Beans, lentils