What are the hazards of smog weather to people?

According to experts, the smog seems mild, but in fact it contains more than 20 kinds of fine particles and toxic substances harmful to human body, including acids, alkalis, salts, amines and phenols. , as well as dust, pollen, mites, influenza virus, tuberculosis, pneumococcus, etc. Its content is dozens of times that of ordinary atmospheric water droplets. What effects will heavy fog have on human health? How to deal with it? 1. Fog weather is easy to cause respiratory diseases. Winter fog is called "winter killer", and pollutants such as industrial waste gas, automobile exhaust, dust in the air, bacteria and viruses in the air attach to these water droplets. In people's daily life and travel, these substances will have an impact on the human respiratory tract, which may cause acute upper respiratory tract infection (cold), acute tracheobronchitis, pneumonia and asthma attacks, and induce or aggravate chronic bronchitis. In particular, children's respiratory mucosa of nose, trachea and bronchus is tender, and the number of alveoli is small, the development of elastic fibers is poor, and the interstitial development is vigorous, which makes them more susceptible to respiratory viruses. Being in foggy weather for a long time will cause tracheitis, laryngitis, pneumonia, asthma, rhinitis, conjunctivitis, allergic diseases, etc., which will have a certain impact on the growth and physique of children and adolescents. In addition, diabetic patients with poor air quality and poor resistance in foggy days are very likely to have lung and trachea infections, which will aggravate their condition. Cloudy days are more likely to cause cancer than cigarettes. Zhong Nanshan, academician of China Academy of Engineering and director of Guangzhou Institute of Respiratory Diseases, once pointed out at a forum that in the past 30 years, the smoking rate of the public in China has been declining, but the prevalence rate of lung cancer has increased more than four times. This may be related to the increase in haze days. Not only foggy days with very low visibility will have an impact on human health, but also foggy days and cloudy days will have the same problem. Third, smog weather induces cardiovascular and cerebrovascular diseases. Haze weather also has a serious impact on cardiovascular and cerebrovascular diseases, which will hinder normal blood circulation, lead to cardiovascular diseases, hypertension, coronary heart disease, cerebral hemorrhage, and may also induce angina pectoris, myocardial infarction and heart failure. Chronic bronchitis has cor pulmonale. In addition, when the air pressure is relatively low in foggy weather, people will feel irritable and their blood pressure will naturally rise. On the other hand, in foggy days, the temperature is often low. Some patients with hypertension and coronary heart disease suddenly go from warm indoor to cold outdoor, and blood vessels expand with heat and contract with cold, which will also increase blood pressure, leading to stroke and myocardial infarction. Therefore, patients with cardiovascular and cerebrovascular diseases must take medicine on time and handle it carefully. This answer is taken from Shiyang electromechanical. If there is any infringement, please contact to delete it.