This is the major reason why scientists are continuing to conduct studies on antioxidant foods and the benefits that the body can incur from them. Antioxidant Foods: Which Foods? As mentioned earlier, many foods with high antioxidant levels are vegetables and fruits. Tomatoes, broccoli, cauliflower, peppers - these are but a few of the many antioxidant foods out there. Antioxidants protect the body from harmful, excess free radicals, sweeping them up before they can cause damage. These days, when we talk about antioxidants, the first thing that comes to people's minds is "supplements." However, studies on antioxidant supplements are for the most part inconclusive and so far, no one study has come up with the same results during antioxidant supplements tests. "Activin is a powerful inhibitor of free radical induced lipid peroxidation and DNA fragmentation," Bagchi further explained. "This is significant because free radicals can destroy cell membranes and damage DNA, and may be a root cause of certain types of cancer, heart disease, and even the aging process itself. 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. In a recent issue of the Journal of Nutrition, the total antioxidant content of several antioxidant fruits, including fruits, berries, vegetables, cereals, nuts, and legumes, was analyzed. Why are they damaging to the human body? And how does vitamin E and the other antioxidant nutrients help protect the body against free radical damage? In this article, we will attempt to answer all your questions about antioxidant and free radicals, plus help you understand why it is so important to include rich sources of antioxidant nutrients in your daily diet. The reason free radicals are highly unstable is that they have an unpaired electron which they try to recompense by stealing an electron from a stable molecule. This actually sets off a chain reaction that can damage the body's proteins and cell membranes, weaken the cell's natural defenses, and disrupt the cell's DNA.