(2) Biological factors Among the biological factors, the most important factors affecting human health are genetic factors and psychological factors. Modern medicine has found that there are not only two or three thousand kinds of genetic diseases, but also the incidence rate is as high as 20%. Therefore, it is of special significance to attach importance to the influence of heredity on health. Psychological factors are closely related to the occurrence, prevention and treatment of diseases. Negative psychological factors can cause many diseases, and positive psychological state is a necessary condition to maintain and improve health. Medical clinical practice and scientific research have proved that negative emotions such as anxiety, resentment, sadness, fear and anger will make various systems of the human body dysfunctional, which will lead to insomnia, tachycardia, elevated blood pressure, loss of appetite, menstrual disorders and other diseases. A positive and optimistic attitude can stand the test of victory and failure. In a word, mental state is a reflection of social environment and living environment, and it is an important factor affecting health.
(3) Lifestyle factors Lifestyle refers to a series of living habits, living systems and life consciousness formed by people under the long-term influence of certain culture, nationality, economy, society, customs and family. In the long process of human development, although it has long been recognized that lifestyle is related to health, various infectious diseases that endanger human life have always been the main cause of human death, and the influence of lifestyle factors on health has always been ignored.