1, eat “bitter” American scientists believe that bitter melon, wild vegetables and other bitter food is an important source of vitamin B12. The cyanide in its main component has no destructive effect on normal cells, but has a strong killing power on cancer cells, and can inhibit the cytochrome chemistry enzyme in cancer cells, making them metabolically impaired and “suicide” death. 2.Eat “acid” Sour fruits are rich in vitamin C, which has anti-cancer effect. The lactic acid bacteria in yogurt and sauerkraut can break down sugar into lactic acid, inhibit the reproduction of corrupt bacteria in the colon, reduce the production of toxins and devour carcinogenic substances, which can effectively prevent colon cancer and rectal cancer. 3.Eating “vegetarian” often eat coarse grains, soybeans, potatoes and other fiber-rich foods, which can stimulate intestinal peristalsis and accelerate the excretion of toxic, harmful and carcinogenic substances, and have certain anti-cancer effects. 4. Eat “raw” fresh vegetables, especially cruciferous vegetables, contain quinone and phenol. Quinone can dilute carcinogenic substances and accelerate their excretion; phenol can stop the metabolism of cancer cells. 5.Eating “light” Oncology epidemiology expert survey shows that the mortality rate of stomach cancer is low, but if you eat 10 to 15 grams of salt per day, the mortality rate will increase. The reason is that salt will stimulate the secretion of gastric acid and pepsin, causing inflammation, swelling, ulceration, bleeding and atrophy of gastric mucosa, which will easily lead to cancer. Less eating and more chewing can change the hormonal changes of the pituitary gland and reduce the occurrence of breast cancer; more chewing can stimulate the secretion of salivary glands, and many enzymes in saliva have strong anti-cancer effects; more chewing can also eliminate carcinogenic substances such as amyl nitrite, aflatoxin and benzopyrene in food, which can effectively reduce the incidence of esophageal cancer, stomach cancer, liver cancer and other cancers.