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What Are The Effects Of Smog On Health
- Aug 09, 2018 -

Haze weather, now frequent extreme weather around the world, makes us worried about health. What is haze? How to correctly understand the impact of haze on human health? How? These have become the concerns of the general public.

What are smog and PM2.5?

Fog and haze is a combination of fog and haze, a climatic phenomenon. In the China meteorological administration's overground meteorological observation standard, the haze weather definition is: "many extremely fine dry dust particles float evenly in the air, making the horizontal visibility less than 10 kilometers of air.

The haze, which contains less than 80 percent of its water content, is yellow and orange-gray because it is rich in very fine particles such as dust, sulfuric acid, nitric acid and organic hydrocarbons. The haze is relatively thick, up to 1 to 3 km, and there is no significant gap between it and the clear sky area. Haze particles are small and relatively uniform, and the floating particles cannot be seen by the naked eye.

PM stands for particulate matter. PM100 is the total suspended particulate matter in the air, that is, the amount of particles with diameter of > 10 x m in each cubic meter of air, and less than or equal to 100 x m. Such particles are usually blocked outside the human nose and cannot deposit to the lower respiratory tract, so they have little effect on human body. The particulate matter that affects human health is PM10 and PM2.5, both of which can be inhaled in respiratory tract.

What are the health effects of PM 2.5?

PM2.5 particles are less than 1/20 of the thickness of human hair, and they are not easily blocked to enter the terminal airway, alveoli and even blood, which have various impacts on human health, including cardiovascular and cerebrovascular system, respiratory system and energy. PM2.5 particles can disrupt the air exchange in the lungs, leading to the occurrence of diseases including asthma, bronchitis and cardiovascular diseases. PM2.5 can also serve as a vector for viruses and bacteria, contributing to the transmission of respiratory diseases.

Haze climate is related to hypertension, coronary heart disease, cerebral haemorrhage, and may induce angina pectoris, myocardial infarction, heart failure, etc. In old age, slow bronchitis, emphysema, asthma, rhinitis, upper and lower respiratory tract infection, pulmonary heart disease and other common respiratory diseases can be triggered by haze. Smog can also lead to mental disorders, lethargy, depression and other symptoms, starting with the addition of respiratory diseases.

How to protect yourself from smog?

The haze climate will directly affect our health and life procedures, so the improvement of self-protection awareness is particularly important. The following points should lead to our attention.

1. Wear a protective mask. When the air pollution is serious, wearing a mask will not have the effect of preventing haze, but still have the effect of preventing wind, keeping warm and reducing the invasion of pathogenic microorganisms in the air, but it must be replaced or cleaned frequently as requested.

2. Close doors and Windows, cut back on outings and field training. Under normal circumstances, open window ventilation is the best way to improve indoor air quality. But when outdoor air quality is poor, close doors and Windows and cut back on going out. The haze is usually severe in the morning, and will gradually reduce in the afternoon and evening. Therefore, it is best to suspend morning exercises and change the field training to indoor in the haze climate.

3. Pay attention to personal hygiene. When entering the room after going out in smoggy days, personal hygiene should be conducted timely, such as washing hair, washing face, washing hands, rinsing mouth, cleaning nose, etc., to prevent damage to human body caused by PM 2.5. When washing your face, use warm water to remove dust particles adhering to the face and skin. Clean your nose with a clean cotton swab and rinse it over and over again.

4. Eat light and drink plenty of water. Eating foods rich in vitamins and antioxidants can help eliminate free radicals formed in the body by pollutants in haze. Eat less stimulating food, eat more fresh vegetables and fruits to make up various vitamins and inorganic salts, and embellish the lungs to remove dryness, dispel phlegm and cough, strengthen spleen and fill kidney; Can also eat more tofu, milk and other food; In addition, eat more pear, lily, loquat, orange, orange fruit. According to the report, drinking luohan fruit tea can clear the lungs and reduce phlegm in time, and can deal with the problems of a dry throat and coughing, and reduce the damage to the lungs caused by air pollution. Drinking more water is beneficial to improve the protection and disease resistance ability of sebaceous glands.

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