Human beings are advanced creatures living in nature. Adaptation to nature and natural selection determine human survival and reproduction. There is no doubt that changes in weather and climate are closely related to human health.

The classic Chinese medicine "Huangdi Neijing" says: "Man is born on the earth, and his life hangs in the sky." In the constant gas exchange between the human body and the external environment, meteorological factors play the most important role. . Changes in meteorological factors beyond a certain range (such as extreme cold, dampness, heat, strong solar radiation, etc.) can cause thermal imbalance in the body, causing many diseases, such as colds, arthritis, neuritis, neuralgia, myalgia, frostbite, etc. . Statistics show that about 40% of deaths occur under abnormal weather conditions.

Weather changes can be divided into cyclical and non-periodic changes. Cyclic changes mainly refer to changes in day and night and changes throughout the year. Daily weather changes are non-periodic stimuli, causing autonomic nerve function disorders, loss of regulation, and imbalance in the body. Research shows that infants and the elderly are most sensitive to changes in temperature. From infants to adults, the effectiveness of the body's temperature regulation system increases by about 20 times; the elderly cannot adapt well to large temperature changes during the aging process. The elderly are also prone to diseases of the respiratory system and vascular system caused by changes in cold and heat. A Japanese study on temperature and human health showed that when the temperature is below 8°C, the mortality rate is the highest; when the temperature is between 8 and 33°C, the number of deaths is lowest; when the temperature exceeds 33°C, the mortality rate increases again.

Meteorologically related diseases can be divided into two categories based on their incidence: one is "seasonal diseases" affected by climate, which occur in fixed seasons every year; the other is "seasonal diseases" affected by weather changes. "Meteorological disease", which occurs or occurs under certain weather conditions. From the analysis of the causes, some of these "seasonal diseases" and "weather diseases" are directly related to meteorological factors, such as heat stroke and frostbite. Meteorological factors are the physical causes of diseases; some are caused by the non-specific stimulating effect of meteorological factors. , such as asthma, coronary heart disease, arthritis, etc., meteorological factors are only incentives. Another example is when the air pressure is too low, heart disease, mental illness and other chronic diseases are prone to attack. Some infectious diseases are also related to the weather. For example, Japanese encephalitis is transmitted through mosquitoes, and the growth and development of mosquitoes is affected by meteorological conditions.

Heaven and man are in harmony with each other, and to prevent diseases, one should know about heaven. Our country is a country with distinct four seasons. In order to avoid or reduce the harm to the human body caused by drastic changes in weather and climate, we must pay attention to changes in weather and climate, understand the meaning of various meteorological indexes, and avoid weather-causing factors.