However, raspberries, cranberries, blueberries, and blackberries are also good antioxidant foods that are rich in proanthocyanidins which help prevent cancer and heart disease. Broccoli Another excellent antioxidant foods are green leafy vegetables. Your mom always say, "Eat your broccoli." Believe me, your mom is not out to torture you by making you eat veggies you hate. Free radicals cause a chain reaction of "electron stealing" because the minute they start taking away electrons from other molecules, those molecules become free radicals themselves. Massive destruction ensues, leading to such disorders as Alzheimer's, cardiovascular disease, cancer, senility, and more. However, they do not want to put a stop to our continued taking of antioxidant vitamins, the ones found in nature and in the foods that we eat. Some of the basic food groups that prove to be rich sources of antioxidant vitamins are the following: Breads, cereals, pasta, and starchy vegetables (such as potatoes, yam, squash, etc. Lignans especially is that substance in flax oil that has antioxidant properties. The Benefits of Flax Oil Lignans A natural plant chemical, lignans are antioxidant molecules with anti-cancer, anti-viral, and anti-bacterial properties. Flax oil is the richest source of lignans. Diets high in lignans can lead to a lower chance of getting colon, prostate, and breast cancer. Natural antioxidants are primarily derived from plants. 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. 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. According to their findings, the overall best sources of antioxidant fruits under the berry category are dog rose, sour cherry, blackberry, strawberry, raspberry, crowberry, blueberry, and black currant.