Chemoprevention refers to the prevention of cancer or cancer recurrence through the use of drugs, vitamins or other agents . Some of the mechanisms by which dietary components may cause chemoprotective effects include: cytochrome activation or inhibition (e.g., alcohol), carcinogen detoxication (e.g., yellow-green vegetables), antioxidant activity (e.g., vitamins A, C, andE), immune stimulation (e.g., arginine), alterations in physiology (e.g., fiber) and hormonal effects (e.g., phytoe-strogens). The following is a brief description of the chemopreventive mechanisms of some specific dietary behaviors and substances.
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