Antioxidants come up frequently in dis- cussions about good health and prevent- ing diseases. These powerful substances, which mostly come from the fresh fruits, and vegetables we eat, prohibit (and in some cas- es even prevent, the oxidation of other molecules in the body. The benefits of antioxidants are very important to good health, because if free radicals are left unchallenged, they can cause a wide range of illnesses and chronic diseases.