CoQ10 (Coenzyme Q10) is a micronutrient essential to all human life. It is a naturally occurring nutrient that works as a co-factor in the body's electron transport system where all of the body's energy is derived. CoQ10 regulates the flow of oxygen moving in and out of the mitochondria, which are the cell's power plants. The mitochondria can't function without CoQ10. Declines in CoQ10 levels occur with advancing age and appear to be correlated with deterioration of the immune system. Supplementation with CoQ10 could help to boost energy levels, strengthen and protect the heart and blood vessels, enhance the immune system and protect against free radical damage.