Antioxidants are everywhere. Energy drinks, skin treatments, vitamin supplements, and cold remedies, and all extol the virtues of their special combination of health giving ingredients. To better understand antioxidants we have to start with oxidation, the chemical process of one substance “stealing” an electron from another and changing, or destroying it. You don’t have to understand the chemistry to get the picture. Graphic examples are all around us. When iron is oxidized, it becomes rust. The same process is seen when a slice of potato or avocado is left in the open air. Oxidation changes the intrinsic nature of the substance.