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. These substances are called free radicals. Free radicals can be harmful to the body, especially if there is an excess of them. Antioxidant fruits may be plain fruits, cereals, and vegetables. Some antioxidant fruits may also be taken in dried, powdered forms, like dietary supplements or pills. There is some research though that antioxidant fruits may be taken better if you actually include them in your diet. Fruit, vegetables, and cereals in your diet have additional benefits compared to taking antioxidant fruits supplements. Today's medical science has led to several wondrous discoveries about our health and the food we eat. You might be familiar with the saying, "An apple a day keeps the doctor away." And it's true because recent studies show that there are certain substances found in fresh fruits and vegetables that can be very beneficial to our health. 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. A recent food Olympics has been conducted and out of the 100 different varieties of foods, vegetables, and nuts, 20 antioxidant rich foods came out at the top. This list of foods contained most of the very rich antioxidant foods as ranked by nutrition scientists at the US Department of Agriculture (USDA) and reported by the University of Alabama website on November 1, 2004. Supplements of these antioxidant enzymes are also available. Usually they are for oral administration in the form of pills or capsules. However, the absorption of antioxidant enzymes in supplement form is minimal at best. A better way would be to supplement the body with the "building blocks" required in order for our body to manufacture its own SOD, catalase, glutathione peroxidase, and other such antioxidant enzymes.