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The occurrence and development of cancer are mainly divided into three stages: initiation stage, cancer promotion stage and malignant progression stage. Good dietary nutrition not only has the potential to prevent tumors, but some nutrients also have functions such as antioxidants, inhibiting the proliferation of tumor cells, and stimulating the body's production of interferons. Therefore, they also play a positive therapeutic role to a certain extent. < ="_"> < ="" =""> <>According to research by American scientists< r="../." =" " ="" ="" />< ="- ">The main environment Factors and their weights in tumor occurrence are as follows: 1. Smoking accounts for %; 2. Diet factors account for % on average, and the variation range is from % to %; 3. Fertility and sexual behavior account for %; 4. Occupational factors account for %; 5. Alcohol abuse accounts for %; 6. Geographic factors account for %. ⑦Environmental and water pollution accounted for %; ⑧Drug and medical factors accounted for %.
<>Genetic factors mainly affect the body's sensitivity to environmental factors. Many epidemiological survey results also suggest that the occurrence of tumors is related to dietary habits. The first two periods are benign stages of tumor growth. The lesions in this period can be reversed. Improper dietary nutrition mainly affects tumors in these two periods. Therefore, a good diet can avoid the development to the third stage. <>The cause of cancer is extremely complex, and scientists are still working tirelessly to solve it. It is expected that cancers can be reduced by rationalizing diet and that cancers can be reduced by getting people to stop smoking and drinking hard alcohol. A large amount of research data shows that about % of cancers are mainly related to regular smoking and excessive drinking of hard alcohol, including some lung cancers, oral cancers, esophageal cancers, laryngeal cancers and some bladder cancers. About % of cancers are related to nutritional factors. This refers to Cancers that fall into this category include gastric cancer, rectal cancer, Colon cancer, ovarian cancer, uterine cancer and breast cancer. Some people call cancers caused by these causes "lifestyle cancer". It can be seen that dietary factors play a very important role in the occurrence of human tumors. Humans have not fully understood the causes of tumors, but the popular view is that the occurrence of tumors has both genetic and environmental causes