Drink grape juice. Tomatoes get their red color from lycopene, a phytochemical that blocks the formation of carcinogens. Lycopene appears to be especially effective at preventing prostate cancer. Tomatoes are a major source of the strong antioxidant lycopene. Tomato eaters function better mentally in old age and suffer half as much heart disease.
Canned tomatoes have three times more than fresh.
Carrots, parsley, celery, cumin, anise, caraway and coriander are rich sources of phytochemicals. The carotenoids in carrots are strong antioxidants. Compounds found in celery boost the action of a carcinogen-deactivating enzyme. One of the best ways to build the immune system is with fresh organic vegetable juices. A carrot, celery, cucumber, garlic cocktail a few times a day instead of a sweet snack is as good as life insurance.