第八章外源化学物致癌作用03剖析.ppt

Nutrition in Cancer Prevention Diets contain both inhibitors and enhancers of carcinogenesis Animal studies also test the effect of food and nutrition on cancer and provide guidance for epidemiological studies Carbohydrate and Glycemic Index High glycemic-index diet associated with increased risk of cancers including ovarian, endometrial, breast, colorectal, pancreas, and lung Limit processed foods and refined sugars and emphasize whole grains and low GI foods Fruits and Vegetables Fruits and vegetables found to be associated with lower risk in 128 of 156 dietary studies Increased consumption of fruits and vegetables is associated with lower risk of cancers of the oral cavity, esophagus, stomach, colon, rectum, and bladder Evidence less strong for hormone-related (类激素相关）cancers such as breast and prostate cancer 1. Broccoli Most attention as a breast cancer prevention food Research has shown it blocks tumor growth, preventing the further spread of cancer if it does occur anti-cancer benefit from other cruciferous veggies, including cauliflower, cabbage, Brussels sprouts, and kale - eat one or more of these vegetables every day 2. Garlic Garlic seems to have an impact on cell cycling (process by which a normal, healthy cell might become cancerous) Credit for regulating this goes to the component of garlic called allyl sulfide Allyl sulfides are found throughout the onion family Prevents breast cancer 2. Garlic Garlic seems to have an impact on cell cycling (process by which a normal, healthy cell might become cancerous) Credit for regulating this goes to the component of garlic called allyl sulfide Allyl sulfides are found throughout the onion family Prevents breast cancer 3. Apples An apple a day may keep cancer away — but there’s a catch. Peeling apple-tossing away a rich source of fiber, antioxidants, and other compounds needed for anti-cancer nutrition. Lab studies show that apple peel can actually fight the spread of cancer cells. 4. Pomegranates