And so, studies began to look towards other sources of antioxidants as possible antioxidant supplements. Vitamins C and E were the next contenders but again, studies showed mixed results. 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. The human body cannot produce its own supply of natural antioxidants; that is why we have to depend solely on our diet to get the amount of antioxidants our body needs. Groups of well-known natural antioxidants include catechins, coumarins, indoles, and carotenoids. All these are complex compounds found in almost every plant. With the possible exception of longevity medicine, antioxidant antiaging is one of the fastest growing segments of medicine. How antioxidant antiaging works As you process food for energy, your body produces substances that are highly unstable. The process is called oxidation and the substance produced is called "free radicals. Fruit, vegetables, and cereals in your diet have additional benefits compared to taking antioxidant fruits supplements. Scientists point out that this might be because consuming antioxidant fruits in food may provide a combination of lesser-known but potent antioxidant substances, which may afford greater effect than that of any single nutrient or individual antioxidant supplement. Even the mere act of breathing causes oxidation to take place. That being said, free radicals, as by-products of oxidation, will always be present in our body. But what if there is a way for us to retard the development of free radicals? What if there is a way to break the free radical chain reaction? Herbal antioxidants are the body's natural defenses against harmful radicals. Their function is to stop free radicals from "attacking" other healthy molecules and causing a chain reaction. Because of this function, herbal antioxidants are said to play a role in the prevention and potential cure of various degenerative diseases such as cancer, Alzheimer's, heart disease, rheumatoid arthritis, atherosclerosis, and several others.