Cancer prevention should start from the following three levels 1. Level 1 Cultivate a good and healthy lifestyle, which is the most economical health resources and the most effective cancer prevention initiative at present. Stay away from tobacco and alcohol. Tobacco is the most important independent factor of cancer occurrence. Among all cancer patients, more than 1/3 are related to smoking, and the more you smoke, the higher the incidence of cancer. Adopt good eating habits. Eat scientifically, match meat and vegetables, eat less pickled, smoked, fried, nitrate-containing, high-fat and high-cholesterol foods, eat more foods with anti-cancer and anti-cancer effects, and advocate raw food. Such as tomatoes, dark green vegetables, cruciferous vegetables, soybean products, citrus fruits, malt and cereals, etc. 2.Second level Early treatment of background diseases or precancerous states with certain cancers to interrupt their evolution process. Cancer does not appear overnight, but is a process from quantitative to qualitative change. In the evolutionary process, there is a stage that will become but not yet become, which is the pre-cancerous stage. If timely and effective treatment can be provided to interrupt the evolution process, the incidence of some cancers can be greatly reduced. 3.The third level is to improve health awareness, regular medical checkups, and strive for early detection and treatment. Tumors are often not clinically specific, and many patients are already in the middle and late stages when they are found, losing the best time for treatment. It is important to enhance the awareness of self-care and regular medical check-ups to facilitate early detection of cancer. Clinical practice proves that many cancers detected early and treated positively and effectively can have a better prognosis and a few can be cured clinically. Experts recommend the top 10 cancer prevention foods As the saying goes, “disease comes from the mouth”, do not eat junk food that can cause cancer, eat more food that can prevent and fight cancer, and a healthy body can definitely “eat” out! 1, sweet potatoes experts say, in 20 can inhibit tumor cells color vegetables, sweet potatoes are deservedly the first. Sweet potatoes contain substances called glycolipids that inhibit the growth of cancer cells, revive a weakened immune system, and prevent breast cancer and colon cancer. 2, carrots carrots contain carotene in the body can be converted into vitamin A, vitamin A has cancer prevention and anti-cancer effects. Carrots also contain more folic acid, which also has an anti-cancer effect. In addition, the molybdenum in carrots can also prevent and fight cancer. 3, cauliflower Cauliflower’s cancer prevention role lies first in the indole substances contained in it, which can reduce the level of estrogen in the body, which can prevent breast cancer. In addition, cauliflower contains more fiber, vitamin C, carotene and trace elements, all of which have anti-cancer effects. Cauliflower can also prevent prostate cancer. 4.Mushrooms The anti-cancer rate of polysaccharides in shiitake mushrooms reaches 80%-95%, which has significant effect on many kinds of malignant tumors such as leukemia, esophageal cancer, stomach cancer, intestinal cancer, lung cancer, liver cancer and so on. After various cancer surgeries, continuous consumption of shiitake mushrooms can also prevent the metastasis of cancer cells. 5.Grapes Grapes have strong anti-cancer properties because they contain resveratrol that prevents healthy cells from becoming cancerous and inhibits the spread of already malignant cells. All the wines contain a certain amount of resveratrol, the highest content is red wine, so regular consumption of red wine has a certain role in cancer prevention. 6, grapefruit citrus Every 100 grams of grapefruit contains 519 mg of calcium, so regular consumption of grapefruit can prevent the occurrence of colorectal cancer. Citrus juice in the presence of a strong anti-cancer substances, namely, “Nomilin”, which can make the decomposition of carcinogenic chemicals, greatly reducing its toxicity, but also cut off the long carbon chain of viral nucleic acids, inhibit the growth of cancer cells, to prevent the occurrence of stomach cancer. 7.Seafood Seaweed contains various nutrients such as protein, fat and minerals, and can selectively filter out carcinogens such as strontium and cadmium. Seaweed contains many trace elements, and iodine is especially rich, which is quite effective in preventing cancer. Sea cucumber contains active ingredients such as osmolyte, ginsenoside and acidic mucopolysaccharide, which have the function of anti-cancer and inhibit cancer cell metastasis. 8.Asparagus Asparagus, or lobelia, contains a variety of anti-cancer nutrients. It can directly kill cancer cells, and has no side effects on normal cells. It is important to note that when asparagus is used to assist in the treatment of tumor diseases, it can only be effective if consumed daily. Asparagus can be fried, boiled, stewed, cold, and can also be made into soup, but should not be eaten raw. Tomatoes are rich in lycopene, which has a unique antioxidant capacity and can remove free radicals, protect cells from damage to deoxyribonucleic acid and genes, and stop the cancer process. In addition to its preventive effect on prostate cancer, tomato can also effectively reduce the risk of pancreatic cancer, rectal cancer, laryngeal cancer, oral cancer, lung cancer, breast cancer, etc. 10, soy beans Soy beans are very effective in preventing breast, colon and rectal cancer. As long as the diet contains 5% of soy or its products, it can significantly inhibit the chemical carcinogens that induce breast cancer. Soybeans contain a variety of trace elements, such as cobalt, selenium and molybdenum, which can significantly reduce the risk of colon and rectal cancer.