In the book "Diet, Nutrition and Cancer Prevention" published by the World Cancer Research Foundation, "anti-cancer catering suggestions" are put forward to remind people to pay attention to the reasonable collocation of nutritional elements while paying attention to nutrition. These suggestions emphasize the choice and collocation of food. Improper diet is one of the factors leading to cancer. Changing diet structure can effectively prevent and avoid breast cancer, gastric cancer and colon cancer. Paying attention to the "plant-based" dietary structure with plant-based food is conducive to reducing the intake of animal fat. Eating more vegetables, fruits, beans and coarse grains is not only beneficial to prevent cardiovascular and cerebrovascular diseases, but also to prevent cancer. Comments: The occurrence of intestinal cancer is closely related to constipation, which can prevent most intestinal cancers. The main reason of constipation is the lack of plant fiber in diet, while vegetables and fruits are rich in plant fiber, especially eggplant and radish, which contain a lot of crude fiber. Constipation patients should increase the intake of this kind of food to reduce the occurrence of intestinal cancer. Drinking under "22" is not a necessity for human beings. Therefore, drink as little or no alcohol as possible, especially high-concentration spirits are forbidden. Long-term drinking can easily lead to chronic alcoholism and even cancer. Comments: Men on the wine table always like to brag about their capacity for drinking. Beer is counted by the bottle, and liquor is drunk by the catty. In fact, from a medical point of view, the healthy drinking amount of men is only two ounces, which still refers to low-alcohol wine. Even if you want to drink, try to control it to no more than two ounces a day, and no more than one ounce for women. Both gastric ulcer and alcoholic cirrhosis caused by drinking alcohol are precancerous lesions, which can directly lead to canceration. Drinking hurts the stomach, drinking the liver, and gastric cancer and liver cancer are not far away. Tip: What you eat can reduce the harm of drinking. Don't trust the refrigerator too much. Don't store perishable food at room temperature, otherwise eating food contaminated by germs will easily induce cancer. In addition, food should not be stored in the refrigerator for too long, preferably not more than three months. Comments: In order to keep food for a long time, people have thought of many ways. However, these methods can only delay the deterioration of food, but they cannot prevent it. Too much trust in the fresh-keeping function of refrigerator makes food easy to be stored for a long time and attacked by carcinogens. In fact, not only moldy food contains carcinogens such as aflatoxin, but also some storage methods may produce carcinogens themselves. For example, nitrosamines in pickled foods are the chief culprit of gastric cancer.