SelenoExcell is a natural form of selenium in a 100% organically bound form for superior absorption and utilization in the body over other forms of supplemental selenium because it replicates the natural form of selenium found in food. The body needs selenium to facilitate several functions, including thyroid hormone metabolism and the formation of selenium-containing proteins that build heart muscle and red blood cells. Dietary selenium depends largely on soil conditions where food is grown or raised, so there's no guarantee just how much selenium you're getting from your food. The body is in need of constant antioxidant protection to limit the cellular damage caused by free radicals. The compounding negative alterations to cells leaves us vulnerable to disease formation. Antioxidants such as selenium help to prevent the production of destructive free radicals.* As a natural nutritional food source, yeast cells replicate the mineral conversion process performed by most plants. This natural plant process produces a more bioavailable form of selenium with improved nutrition and health properties. SelenoExcell originates from a non-pathogenic, non-GMO Saccharomyces cerevisiae yeast strain. The S. cerevisiae cells in SelenoExcell are dead or inactive, and only the nutritional properties remain. The cells cannot reproduce in the human body when consumed because they are no longer alive.*