In most industrialized countries, cardiovascular disease and cancer are ranked as the top two leading causes of death. The causes of both diseases have been linked to lifestyle and dietary choices. A diet high in fruits and vegetables may provide some protection. People who eat the highest amount of fruits and vegetables have a 20% lower risk for coronary heart disease, and the lowest risks were seen in people who ate more fruits rich in polyphenolic compounds and vitamins. Heart infarct, cancer, and neurodegenerative diseases have been shown to have free radical involvement in their etiology. In order to prevent oxidative reactions in biological tissues, food rich in antioxidants should be consumed.