Antioxidant enzymes like superoxide dismutase, catalase, and glutathione peroxidase prevent oxidation by reducing the rate of chain initiation. This time, instead of waiting for the free radicals to make a long chain of free radicals, antioxidants scavenge initiating radicals and destroy them before oxidation is set in motion. The human body produces several types of antioxidant enzymes. The antioxidant enzymes include superoxide dismutase (SOD), catalase, and glutathione peroxidase. These antioxidant enzymes neutralize many types of disease-causing free radicals, ridding the body of their harmful effects. Supplements of these antioxidant enzymes are also available. Free radicals can be harmful to the body, especially if there is an excess of them. They may cause damage to the cell membranes, causing them to weaken. Because free radicals are chemically unstable, they have this bad habit of stealing electrons from stable molecules and in so doing, turn these molecules into free radicals themselves. Anti Aging Antioxidants - The Answer to Aging In their focused attempts to find a solution to aging, scientists have finally made a breakthrough with the discovery of anti aging antioxidants. Anti aging antioxidants are substances whose sole function is to act on free radicals and keep them from damaging cell tissues. Under the antioxidant fruits category are pomegranates, grape, orange, plum, pineapple, lemon, dates, kiwi, Clementine, and grapefruit. For legumes, broad beans topped the list while in the nut category, walnuts and sunflower seeds occupied the first and second spots, respectively. Other antioxidant fruits include kale, chili pepper, red cabbage, barley, millet, corn, ginger, and red beets. The two most important oxygen-centered free radicals are superoxide and hydroxyl radical. They are derived from molecular oxygen under reducing conditions, such as when a person breathes. However, because of their high reactivity, free radicals often participate in unwanted side reactions resulting in cell damage.