Neutralizing the threat of excess free radicals your body's natural defense system The NEI Connection Antioxidant Enzyme Systems GSH Px Creative Enzymes The balance of prooxidants and antioxidants in the human body is heavily reliant on an adequate supply of dietary micronutrients. Important antioxidant enzymes like superoxide dismutase (SOD) William Wallace, Ph.D Glutathione peroxidase enzyme molecule Stock Image Science Source Images