The only problem is they do not distinguish between healthy and harmful molecules so that there is a great possibility that they would also "attack" your other healthy cells, causing massive cellular damage, tissue damage, and eventually resulting in a chronic disease or disorder, such as aging. The damage theories of antiaging primarily look at the damage that our cells incur over time. Hence, this aspect of antioxidant antiaging therapy focuses more on extrinsic aging, which is the aging process compounded by externally caused factors. On the other hand, the programmed theories are primarily concerned with the genetics of how long and how efficient our cells can maintain optimum health. Although Vitamin C antioxidant supplements didn't look as though it could reduce the risk of cancer or heart disease, it didn't have any adverse effects either. In fact, Vitamin C might even provide some protection against loss of sight associated with cataracts in older people. So far the most promising of all antioxidant supplements is Vitamin E, especially when it comes to working against heart disease. The oxidation process is what makes a cut apple turn brown and causes the surface of butter to turn dark yellow. Our bodies will always be vulnerable to oxidation and it is something that is beyond our hands to control. During oxidation, certain chemical substances are produced and among them are those that are highly reactive and chemically unstable. The other aspect is more on the preventive side. 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. Enzymes superoxide dismutase, catalase, glutathione peroxidase, and glutathione reductase, these are only a few of the substances found in the body that can help repair cell damage. But that's only as far as repair is concerned. What about controlling free radicals in the form of prevention? Now, this is where antioxidant support comes in.