berries are the powerful antioxidants of disease-fighting. According to a U.S. Department of Agriculture study, blueberries top the list of antioxidant-rich fruits, followed by cranberries, blackberries, raspberries, and strawberries. The color of berries comes from the pigment anthocyanin, an antioxidant that helps neutralize "free radicals" (cell-damaging molecules) that can help lead to chronic diseases, including cancer and heart disease. Berries, particularly cranberries, may also help ward off urinary tract infections.