In fact, there are a lot of foods to prevent tumors, here I know some common foods to help you enhance immunity and prevent tumors. Recommended foods are as follows: 1, corn corn is a very good green plant, especially fresh corn germ contains a lot of natural vitamin E, vitamin A, lysine, fatty acids and dietary fiber. Can regulate cholesterol metabolism, soften blood vessels, prevention of hypertension, hyperlipidemia, coronary heart disease, diabetes and hypertension at home can also. Corn contains a large amount of dietary fiber, regular consumption, not only to make the bowel movement, but also on the prevention of colon cancer, rectal cancer and lower cholesterol have a very good effect. The trace element selenium contained in corn can accelerate the decomposition of oxides in the body, so that malignant tumor cells are not suppressed by the supply of oxygen molecules. Thus, there is a preventive and inhibitory effect on cancer. 2, potatoes such as sweet potatoes, white potatoes, yams and so on. These foods contain more dietary fiber, this kind of fiber in the intestine is not easy to be absorbed, but also can increase the volume of feces not only can prevent constipation, and reduce the occurrence of colorectal cancer, but also help to reduce cholesterol, prevent coronary heart disease. 3, garlic intends to prevent stomach cancer, intestinal cancer, and inhibit carcinogenic substances, kill cancer cells; often eat garlic can reduce the risk of prostate cancer, garlic also contains effective ingredients to stimulate the human body macrophages phagocytosis of cancer cells. Shiitake mushroom is one of the mushrooms with the highest nutritional value. It contains 7 of the 8 essential amino acids required by the human body and contains more than 30 kinds of enzymes and rich vitamins. Shiitake mushroom can enhance the role of immunity, is a good health food, Shiitake mushroom can also be induced by cancer cells have a significant inhibitory effect. At present, there are a lot of clinical drugs such as: mushroom polysaccharide, to the spirit of mycelium capsule and other drugs, some of the ingredients of these drugs are extracted from the mushroom in the O, (but there are people with increased uric acid can not eat mushrooms) 5, there are also a lot of food, such as: tea, tea polyphenols, is a good anti-cancer food; soy isoflavones in soybeans, tomatoes in the tomato lycopene; carrots in the carrot and other foods have a very good role in tumor prevention. very good role in preventing tumors.