1. Environmental factors (1) Natural environmental risk factors include biological risk factors (such as bacteria, fungi, viruses, parasites, etc. ), physical risk factors (such as noise, vibration, ionizing radiation, etc. ) and chemical risk factors (such as poisons, pesticides, waste gas, sewage, etc.). (2) Social environmental risk factors include politics, economic income, education, employment, living conditions, family relations, psychological stimulation, work stress and various life events.
2. Behavioral lifestyle factors refer to health risk factors caused by their own behavioral lifestyle, which are called self-created risk factors. Behavioral lifestyle is closely related to common chronic diseases or social diseases. Bad behaviors and lifestyles include smoking, drinking, staying up late, abusing poison, unreasonable diet, lack of exercise, unreasonable driving and so on.
3. Biological genetic factors include diseases directly related to heredity and diseases genetically combined with other risk factors, such as age, sex, race, genetic history of diseases, height and weight, etc.
4. Medical and health service factors refer to various factors that are not conducive to protecting and promoting health in the medical and health service system, including low medical quality, misdiagnosis and missed diagnosis, cross-infection in hospitals, and imperfect medical system.