The Chinese Anti-Cancer Association and the World Cancer Fund jointly organized an academic seminar to put forward 14 dietary recommendations for cancer prevention. 1. Reasonable arrangement of diet. Diet should have sufficient nutrition, and food should be diversified, mainly plant food, which should take up more than 2/3 of each meal. There should be a large variety of vegetables, fruits, beans and roughly processed cereals in plant foods. 2. Weight control. Avoid underweight or overweight, and limit the weight gain to no more than 5 kilograms in adulthood. Because of overweight or excessive obesity. The risk of endometrial cancer, breast cancer, kidney cancer and intestinal cancer is very high. 3.Stick to physical exercise. If there is little activity or only light activity at work, about 1 hour of brisk walking or similar amount of exercise should be carried out every day. At least one hour of strenuous exercise should be done every week. 4, eat more vegetables and fruits. Insist on eating 400-800 grams of various vegetables and fruits every day, which can reduce the risk of cancer by 20%, especially oral cancer, nasopharyngeal cancer, esophageal cancer, lung cancer, stomach cancer, colon cancer and rectal cancer. Eat five or more than five kinds of vegetables and fruits every day. 5. Eat more starchy food. Eat 600-800 grams of various cereals, beans, plant roots and stems every day, and the less processed the food, the better. To limit the intake of refined sugar, food starch has the role of preventing colon cancer and rectal cancer, while a high-fiber diet has the potential to prevent colon cancer, rectal cancer, breast cancer and pancreatic cancer. 6. Alcohol consumption. It is recommended not to drink alcohol. Even if you want to drink alcohol, limit it to no more than two glasses a day for men and one glass for women (one glass of wine is equivalent to 250 milliliters of beer, 100 milliliters of fruit wine or 25 milliliters of white wine). Regular alcohol consumption increases the risk of oral cancer, pharyngeal cancer, esophageal cancer, primary liver cancer, colon cancer, rectal cancer, and breast cancer. 7, meat food. If you like to eat meat, the intake of red meat should be less than 90 grams per day, and it is best to replace red meat with fish and poultry or game. Red meat increases the risk of colon cancer, rectal cancer, pancreatic cancer, kidney cancer, prostate cancer, breast cancer. 8, fat. Limit the intake of high-fat foods, especially animal fats. Choose proper vegetable oil and moderate the amount. 9, less salt. Limit the intake of salted food and control the use of cooking salt and seasoning salt. A high-salt diet increases the risk of stomach cancer, and the World Health Organization recommends a daily salt intake of less than 6 grams per person. 10, food storage. Do not consume food that has been at room temperature for too long and may be contaminated with fungal toxins. 11. Preservation of perishable food. Use refrigeration or other suitable methods of preservation. 12. Food additives and residues. Additives, contaminants and residues in food are subject to strict regulations and their presence is harmless, but indiscriminate or improper use may affect health. 13. Cooking methods. Do not eat burnt food. Grilled fish and meat should be grilled to avoid burnt gravy. Fish, meat and bacon grilled directly on the fire should only be eaten occasionally. It is best to boil, steam and stir-fry food. 14. Nutritional supplements. Nutritional supplements are generally not necessary for people following this advice.