There are three main hazards of environmental pollution to the human body: (1) Acute hazard: the concentration of pollutants is very high in a short period of time, or the combination of several pollutants into the human body can cause acute harm to the human body, (2) Chronic hazards: Chronic hazards mainly refer to the hazards that small doses of pollutants continue to act on the human body. Such as the impact of air pollution on the incidence of chronic inflammation of the respiratory tract. (3) Long-term hazards: The harm of environmental pollution to the human body is usually manifested after a long incubation period, such as the carcinogenic effect of environmental factors. The carcinogenic factors in the environment are mainly physical, chemical and biological factors. Physical factors, such as leukemia and lung cancer caused by external radiation or inhalation of radioactive materials, and biological factors, such as tropical malignant lymphoma, have been proven to be a viral primer transmitted by blood-sucking Kuntu. Chemical factors, according to animal experiments, there are more than 1100 kinds of carcinogenic chemical substances. In addition, pollutants have a great influence on genetics. All living things themselves have the characteristics of genetic variation. The environmental damage to human genetics is mainly manifested in mutagenic and teratogenic effects.
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