CABBAGE (including bok choy). Revered in ancient Rome as a cancer cure. Contains numerous anti-cancer and antioxidant compounds. Speeds up estrogen metabolism, is thought to help block breast cancer and suppress growth of polyps, a prelude to colon cancer. Eating cabbage more than once a week cut men's colon cancer odds 66 percent. As little as two daily tbsp. of cooked cabbage protected against stomach cancer. Contains anti-ulcer compounds; cabbage juice helps heal ulcers in humans. Has anti-bacterial and anti-viral powers. Can cause flatulence in some. Some of these important compounds are destroyed by cooking. Raw cabbage, as in cole slaw, appears to have stronger overall health value.