First, it will cause acute poisoning. If the concentration of floating dust and sulfur dioxide in the atmosphere suddenly rises, many times higher than usual, people will feel chest tightness, cough, sore throat, dyspnea and fever. Especially in the later stage of dense fog, the mortality rate rose sharply. Among them, bronchitis has the highest mortality rate, followed by pneumonia.
Second, it will induce diseases or cause chronic poisoning. A large number of research data believe that some chronic respiratory diseases or aggravations are closely related to air pollution. Low concentrations of pollutants can also stimulate the respiratory tract to cause bronchial contraction, increase respiratory resistance, weaken respiratory function, increase respiratory mucosal secretion, and hinder the movement of respiratory cilia, thus leading to weakened respiratory resistance and inducing various respiratory diseases.
Thirdly, it does great harm to the health of women and children. Women bear the burden of human reproduction and have special physiological characteristics. If exposed to harmful toxins in the environment, it will not only endanger women's own health, but also affect the physical development and healthy growth of the second generation through pregnancy and breastfeeding. Children are in the stage of growth and development, and their sensitivity to harmful substances in the environment is much higher than that of adults, and their harm degree and long-term impact are far-reaching.
Fourth, it is carcinogenic to human body. More than 200 carcinogens have been found in the atmosphere. Because the carcinogens in the breathing atmosphere invade the lungs through the respiratory tract in occupational contact, they fall into water or food from the atmosphere, causing more extensive pollution. According to calculation, the number of people who die of lung cancer every year in the world exceeds one million.
Fifth, it has a great stimulating effect on human body. Sulphides, nitrogen oxides, chlorine and photochemical smog in the atmosphere have a strong stimulating effect on the mucous membranes of eyes, nose and throat, and the increase of dust in the atmosphere will also stimulate the conjunctiva.
It can be seen that air pollution is very harmful to human body. We must protect the environment, reduce air pollution and let people live in fresh air, so that their health will be healthier and healthier.