4. Broccoli 西兰花

　　A recent Harvard study finds that cruciferous vegetables, like broccoli, may protect against bladder cancer. It's one of the most common cancers, and affects two to three times as many men as women. Scientists analyzed the diets of nearly 50,000 men and discovered that those who ate five servings or more per week of cruciferous veggies were half as likely to develop bladder cancer over a ten-year period as men who rarely ate them. And broccoli and cabbage were singled out as the most protective foods.

　　最近哈佛大学研究发现，十字花科的蔬菜，例如西兰花，有助于预防膀胱癌。膀胱癌是常见的一种癌症，男性发病率是女性的两到三倍。科学家分析研究了将近五万名男性的饮食后发现，一周至少吃五次十字花科类蔬菜的男性，其在10年内得膀胱癌的几率比很少食用者减少了一半，其中西兰花和卷心菜被认为是最具功效的食物。