Preventive medicine is a subsidiary subject of medicine, which has strong application. It takes individuals and a certain group as the research object, and its ultimate goal is to protect and maintain human health, prevent diseases, enhance human physique and prolong life. The branches of preventive medicine can be divided into epidemiology, medical statistics, environmental health science, social and behavioral science and health management.
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The factors affecting human health can be roughly divided into the following points: 1. Environmental factors. Human beings live in a group society and share the same fate with the surrounding environment. Whether the environment is safe or not has an absolute impact on human health. 2, behavior and lifestyle factors, unhealthy living habits will wear people's bodies, such as staying up late, smoking, drinking and so on. In the long run, it will lead to premature aging, lung cancer and other major diseases. 3, biological genetic factors, biological genes are the constituent elements of life, if genetic defects, it will cause congenital diseases, and it is difficult to cure. 4. Health services Medical and health conditions will affect the ability to cure diseases.
According to the factors affecting human health, the preventive strategies of preventive medicine can be divided into three levels. The first is the prevention of the cause, that is, the social measures taken for healthy individuals and the whole public according to the cause. The second is the diagnosis and treatment measures carried out in the early clinical stage of the disease. Third, medical measures should be taken to prevent the patients who have been diagnosed from getting worse and prolong their lives.
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In order to protect and maintain public health, preventive medicine provides clinical preventive services, including health consultation, screening, chemoprevention and vaccination. Preventive medicine is a subject that takes a series of preventive measures to protect the health of individuals and groups.