The environment has a great influence on human health. Whether it is the natural environment or the social environment, on the one hand, human beings enjoy its achievements, on the other hand, they have to accept its harm. Nature nurtures human beings, but at the same time it produces, exists and spreads all kinds of harmful substances that endanger human health at any time. The abrupt change of climate, airflow and air pressure will not only affect human health, but also bring disaster to human beings.
Second, the harm of harmful chemicals
Pesticide is a common harmful chemical substance. When people use pesticides to kill bacteria and pests, it also causes environmental pollution and harms to various creatures including human beings.
Third, biological factors.
Among biological factors, the most important factor affecting human health is genetic factor. Modern medicine has found that there are not only 2000 and 3000 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 genetic factors on health.
Fourth, lifestyle factors.
Lifestyle refers to a series of living habits, living systems and life consciousness that people have been influenced by a certain culture, nationality, economy, society, customs and family for a long time. In the long process of development, human beings have long recognized that lifestyle is related to health. It can be seen how important it is to develop good living habits for health.
Extended data:
Due to people's insufficient expectation of the negative impact of highly developed industries and unfavorable prevention, three major global crises have resulted: resource shortage, environmental pollution, ecological destruction, and human beings constantly discharging pollutants into the environment. However, due to the diffusion, dilution, redox and biodegradation of atmosphere, water and soil, etc.
The concentration and toxicity of pollutants will naturally decrease, which is called environmental self-purification. If the discharged substances exceed the self-purification capacity of the environment, the environmental quality will change adversely, endangering human health and survival, and environmental pollution will occur.
At present, environmental pollution problems have appeared in different degrees all over the world, including atmospheric environmental pollution, marine pollution and urban environmental problems. With the globalization of economy and trade, environmental pollution is becoming more and more international. In recent years, the problem of transboundary movement of hazardous wastes is a prominent manifestation in this regard.