To be honest, it is impossible to completely prevent tumors, that is, the current means are not able to do without tumors. Does this mean that there are no preventive measures for tumors? Not really. The causes of tumors are still unclear, and all the books will mention: the causes are complex. Indeed, why do we get tumors? The cause is still unclear, and prevention is difficult. Yang Navy, Department of Pathology, Anyang Cancer Hospital Tumor is a genetic disease, which is recognized by medical experts, that is to say, almost all tumors are related to genes (in fact, other diseases such as hypertension, diabetes, etc. are also so). When it comes to genes, we all know that they are innate and cannot be changed at will, so genetic prevention is not realistic for the general public. Tumor occurrence is related to the living environment, and many tumors only occur in specific areas, such as the high prevalence of nasopharyngeal cancer in Guangzhou, and the high prevalence of esophageal cancer in northern Henan Province, etc. The modern environment is not as good as before, with heavy pollution. The modern environment is not as good as before, pollution is heavy, and tumor is more frequent than in the past. However, the change of environment is not an overnight thing, and it is unlikely that the environment of some specific areas will change. I am afraid that only a few people can live in tumor-prone areas for fear of getting tumors. Tumors are related to lifestyle and habits, which many of us do not know, but is the most effective way we can do to prevent tumors! Our modern life has changed a lot compared with the past, and we no longer have enough to eat, but we are well-off, but our life style is not necessarily healthy. Lifestyle includes a lot of content, a few words can not be said, the main are: dietary hygiene and safety, sleep enough, pay attention to health and health care, abandon high salt, high sugar, high oil life, abandon bad habits, such as: eating fast food, pickled food, smoked food and so on. Focus on physical exercise, relaxation and happiness. Lifestyle also includes work style, long-term overtime work and staying up late is obviously unfavorable.