Optimal levels of antioxidants are also needed for maintenance of immune function. HA Finnish study reported that vegetarians had a higher dietary intake of antioxidant nutrients and higher levels of antioxidant enzymes than nonvegetarians. The oxidation of LDL cholesterol is now commonly regarded as important for atherogenesis. Vitamin E is especially effective in protecting LDL from oxidation. Vitamin E also inhibits platelet clumping so that blood clot formation is reduced.
Vitamin E is found in large quantities in whole grains seeds, nuts, and vegetable oils.
In a Harvard study, tomatoes and strawberries were found to be effective against prostate cancer. The benefits of tomatoes were found in both raw and cooked forms. Tomatoes are rich in Iycopene, a red carotenoid pigment that has antioxidant activity. Compromises in the function of the lens and retina of the eye during aging are exacerbated by a lack of antioxidant vitamins and diminished antioxidant enzyme capabilities. Increased antioxidant intake from a diet rich in fruit and vegetables may provide the least costly and most practicable means to delay cataracts.