Which one is more poisonous, smog or cigarettes?

Zhong Nanshan: Hazy weather is more likely to cause cancer than cigarettes

“Hazy weather is more likely to cause cancer than cigarettes.” Zhong Nanshan, academician of the Chinese Academy of Engineering and director of the Guangzhou Institute of Respiratory Diseases, once pointed out when participating in relevant forums , In the past 30 years, the public smoking rate in our country has continued to decline, but the prevalence of lung cancer has increased more than four times. This may be related to the increase in haze days.

Zhong Nanshan emphasized that weather with dense fog and very low visibility will have an impact on human health. The composition of haze is very complex, including hundreds of atmospheric particulate matter. Among them, aerosol particles with a diameter of less than 10 microns are mainly harmful to human health. They can directly enter and adhere to the upper and lower respiratory tract and lung lobes of the human body, causing rhinitis, bronchitis and other diseases. Long-term exposure to this environment can also induce lung cancer.

Hazy weather creates a breeding ground for diseases

Hazy weather can easily cause upper respiratory tract infections, with coughing, sneezing, and runny noses being the main symptoms; inhalable particles in foggy days , sulfur dioxide and other pollutants are the main factors inducing asthma and chronic bronchitis. At the same time, winter is cold and foggy, and the air pressure is low, which can easily cause hypoxia and ischemia, causing coronary vasospasm, thereby inducing cardiovascular and cerebrovascular diseases.

A variety of harmful substances in smog are very harmful to human skin, so we should pay enough attention to them. Especially when harmful substances in the haze adhere to the facial skin suffering from acne, they often cause various symptoms, such as facial itching, redness and swelling, increased inflammation, etc.