living in the city, we are used to haze. Long term inhalation of haze is very harmful to human body, so what are the harm of haze to human body? You have to pay attention to several high incidence.
What is the harm of haze to human body?
1. Increased risk of cancer
As we all know, people who smoke have a 60% higher risk of lung cancer than ordinary people, and haze contains more harmful particles, so haze is more likely to cause cancer than smoking.
2. Cause various bacterial diseases
Because the sun can't reach the earth in the haze weather, or the sun is weak. In this way, the bacteria, viruses and microorganisms on the surface of the ground will rapidly multiply, causing allergies and other diseases.
3. Prone to traffic accidents
Haze weather will reduce the visibility, and only a few meters can be seen seriously. It is very dangerous for pedestrians and vehicles on the road.
4. Injured blood vessel
Dense fog weather pressure is relatively low, people will have a feeling of irritability, blood pressure will naturally increase. In addition, the temperature is often low in foggy days. Some patients with hypertension and coronary heart disease suddenly go from warm indoor to cold outdoor. The blood vessels expand and contract with heat, which can also increase blood pressure, leading to stroke and myocardial infarction.
5, hurt the brain
Haze not only damages organs, but also affects the nervous system. Experts have introduced that there is a conclusion at the 65th annual meeting of the American Geriatric Society that if PM2.5 in the air is increased by 10 μ g / m3, the brain function of people will age for 3 years.
6, lung injury
Haze days have the greatest impact on the respiratory system, which has become the consensus of most people. The respiratory system has the most frequent contact with the external environment, and the contact area is large. Hundreds of atmospheric particles can directly enter and adhere to the upper and lower respiratory tract and lung lobes of the human body, and most of them will be inhaled by the human body. In the United States, 25000 people with heart disease or poor heart were investigated. It was found that the mortality of patients increased by 10% ~ 27% after PM2.5 increased by 10 μ g / m3.