The orange-yellow spice turmeric, best known for its role in Indian curries and other Asian dishes, fights cancer because of an active ingredient, curcumin, that's a powerful antioxidant. Researchers at Ohio State University in Columbus reviewed numerous animal studies and concluded that curcumin demonstrated anti-cancer effects at virtually all stages of tumor development. Researchers in France and Britain also have been studying curcumin's action in the laboratory and concluded that it prevents and slows tumor cell growth. The great news about turmeric is how easy it is to work into the diet, because you don't need very much. Add a teaspoon of the spice to soups, salad dressings, meat and pasta dishes and you'll reap the preventative effects.

Watch out, though; according to the American Cancer Society, turmeric made certain anti-cancer drugs less effective when studied in animals and test tubes. Cancer patients shouldn't add a lot of turmeric to their diets or take curcumin supplements without talking to their doctors first. 

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