Less windows in foggy days
Many people are used to opening windows for ventilation. But if the smog lasts all day, should I open the window for ventilation or close the doors and windows? Zhi Li pointed out that it is not recommended to open the window for ventilation in the morning and evening in foggy days, and it is best to wait until the sun comes out before opening the window.
You can wear a mask when you go out, which can effectively prevent dust particles from entering the body. Cotton masks are the best because some people are allergic to non-woven fabrics, while cotton masks are generally not allergic and easy to clean. When you come back from going out, you should wash your face and expose your skin immediately.
Besides, there is more fog and less sunshine this season. Due to insufficient ultraviolet radiation and insufficient vitamin D in the human body, some people will experience mental laziness and depression. Vitamin d can be supplemented if necessary. The diet in foggy days should choose light and digestible foods rich in vitamins, drink plenty of water and eat more fresh vegetables and fruits, which can not only supplement various vitamins and inorganic salts, but also play a role in moistening the lungs, resolving phlegm, relieving cough, strengthening the spleen and tonifying the kidney. Eat less irritating food and eat more pears, loquats, oranges, oranges and other foods.
It is easy to cause cardiovascular disease
Smog weather is a "health killer" for patients with cardiovascular diseases, especially the elderly with respiratory diseases and cardiovascular diseases. It is best not to go out in foggy days, and it is not suitable for morning exercise, otherwise it may induce diseases and even heart attacks, which may be 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.
Fog affects the respiratory tract.
In this smoggy weather, the most "injured" is the respiratory tract.
Zhi Li, deputy chief physician of the Department of Internal Medicine, Wangjing Hospital, Chinese Academy of Chinese Medical Sciences, pointed out that the number of outpatients with respiratory tract infections increased significantly due to the foggy weather and smog for several days. Harmful substances in fog can cause irritation and injury to respiratory tract, so foggy days, especially continuous foggy days, are easy to cause diseases such as upper respiratory tract infection, especially children with weak resistance and elderly people with chronic diseases are more vulnerable to smog. Experts said that this is directly related to factors such as low fog weather, poor air circulation and increased inhalable dust. Because some harmful substances on the surface, such as acid, alkali, amine, salt, benzene, dust, pollen, mites, influenza virus, pneumococcus, etc., are dissolved and adsorbed in the water droplets that form fog. These harmful substances stay and accumulate in the fog for a long time, and they are not diffused and diluted, resulting in air pollution, and the automobile exhaust in the air on both sides of the street is more difficult to diffuse. People who inhale or contact with too many harmful substances can induce asthma, allergic rhinitis, tracheitis, pharyngitis and some allergic diseases, and may also cause chronic obstructive pulmonary disease. Healthy people may even be affected, with symptoms such as cough and excessive phlegm.
Morning exercises need to wait for the sun to rise.
Many people have the habit of doing morning exercises and stick to it all the year round. However, Zhi Li reminded that this foggy weather is not suitable for morning exercise, and it is best to go out for exercise after the sun comes out. Because when people do morning exercises, the amount of oxygen needed by the human body increases, and people's breathing deepens and accelerates, and naturally they will inhale more harmful substances in the smog. These inhalable particles will stimulate the respiratory mucosa after entering the human body, and then damage the lungs, leading to human respiratory diseases. It will also invade the respiratory tract and cause insufficient oxygen supply, resulting in dyspnea, chest tightness, palpitations and other adverse symptoms. In addition, sometimes it will be foggy in the morning, and the milky fog gives people a clean feeling. In fact, a large number of pollutants have accumulated in the fog, which can cause airway hyperresponsiveness, and inhalable particles, sulfur dioxide and other pollutants in the fog are the main inducing factors of asthma and chronic bronchitis.
If it is cloudy all day, it is suggested to cancel outdoor sports and choose to do some sports indoors. If the sun comes out and the fog clears, you can go out to exercise. Pay attention to drinking some boiled water properly and replenish water before morning exercise. In addition, don't do too much exercise in winter, and you'd better go quickly.