What is the harm of smog?

1. Smoky weather can easily make asthma relapse. Including bronchial asthma, bronchitis, allergic rhinitis, variant cough, etc., which are mostly related to the recent temperature drop and haze weather. In foggy days, dust and smoke are floating in the air, and dust mites may also be suspended in the fog. Inhalation of these allergens by patients with bronchial asthma will stimulate the respiratory tract and cause asthma symptoms such as cough, sulking and poor breathing. Every time a person breathes, about 500,000 particles are inhaled into the depths of the lungs, but in polluted air, the inhaled particles are 100 times more than this. \x0d\2。 Smog weather is a "health killer" for patients with cardiovascular diseases, especially the elderly with respiratory diseases and cardiovascular diseases. In foggy days, not to mention it is best not to go out to do morning exercises, otherwise it may induce diseases, even heart attacks, and cause life-threatening. Experts pointed out that foggy days are the "dangerous period" for patients with cardiovascular diseases because foggy days are depressed and the oxygen content in the air drops, which makes people feel chest tightness easily. The wet and cold fog in the morning can also cause cold stimulation, which can easily lead to vasospasm, blood pressure fluctuation and increased heart load. At the same time, some pathogens in fog can cause headaches and even induce diseases such as hypertension and cerebral hemorrhage. Therefore, people with cardiovascular diseases, especially the elderly and infirm, should not go out in foggy days, let alone do morning exercises in foggy days to avoid danger. \x0d\3。 In fact, the smog weather is still going on, and the decline in air quality is not a new phenomenon this year. In recent years, every autumn and winter, especially after winter, the central and eastern regions of China will encounter similar situations from time to time. Although there are some meteorological factors, the most important thing is the consequences of extensive and disorderly development. It should be noted that smog is not ordinary air pollution, but it may pose a great threat to the public's life and health. According to official statistics, from 65438 to 0952, more than 4000 people were killed in heavy fog in London. According to environmental experts, smog may replace smoking as the primary cause of lung cancer. \x0d\4。 Hazy days also have 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. And make chronic bronchitis get 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 be careful. Experts point out that continuous foggy days have an impact on people's psychology and body. Psychologically speaking, foggy days will give people a feeling of depression, which will stimulate or aggravate the state of psychological depression. In addition, due to the weak light and low air pressure in foggy days, some people will feel lazy and depressed in foggy days.