1, what bad diet and cancer related to smoking and alcoholism, high salt diet, lavender food, pickles, burnt and moldy food, diet too hot and too hot, partiality, chewing betel nut, lack of vitamins, pungent food and so on are important factors that cause cancer. Therefore, the establishment of good living habits and a reasonable, scientific diet can make the incidence of cancer decreased by 30% to 60%, plus usually maintain a calm, detailed and good state of mind, then, cancer and you have no chance. 2, eat more vegetables can prevent cancer Vegetables contain protein, fat, carbohydrates, various minerals and especially rich in a variety of vitamins, and are indispensable nutrients. In recent years, the countries of medical doctors, nutritionists through research studies found that vegetables are not only nutritious, but also contains many anti-cancer substances. One of the p a carotene, vitamin c; cellulose and other effective ingredients, more protection of the body and anti-cancer, anti-cancer effect. Especially from the yellow-green vegetables in the separation of xanthophylls have a strong control of the development of cancer effectiveness, animal experiments have proved that it has inhibited the role of cancer cells. Eating more vegetables will have more anti-cancer effects, in order to maintain health and reduce the attack of disease, eat more vegetables. 3, cancer prevention food on cauliflower cauliflower nutrition is very rich, it contains protein, fat, sugar, and vitamins, such as VB 1, VB 2 VC, VA, and calcium, phosphorus, iron, copper, manganese and other minerals.