Patient's question:
Beijing is like this in autumn and winter; the haze is too severe, and the entire sky is grey. I have the habit of exercising outdoors every day, but I'm a bit worried that PM2.5 will make me get respiratory diseases.Doctor's answer:
The composition of haze is very complex, including hundreds of types of atmospheric chemical particulate matter. The main ones harmful to health are aerosol particles with a diameter of less than 10 micrometers, which can directly enter and adhere to the human respiratory tract and alveoli. In particular, submicrometer particles deposit separately in the upper and lower respiratory tracts and alveoli, causing conditions such as acute rhinitis and acute bronchitis. For patients with chronic respiratory diseases such as bronchial asthma, chronic bronchitis, obstructive pulmonary emphysema, and chronic obstructive pulmonary disease, haze weather can trigger acute episodes or exacerbations of their conditions. If exposed to such an environment for a long time, it may also induce lung cancer.