What's the weather like in foggy days? Why is smog harmful to human health?

Haze is a disastrous weather, including fog and haze. Haze is a large number of fine particles in the air, mixed with tiny water droplets or ice crystals, which continue to float in the air and cannot be degraded. Long-term exposure to smog will seriously affect health. Due to the lack of sunshine caused by smog weather, pathogenic microorganisms such as bacteria on the ground will multiply rapidly, increasing the chances and probability of human infection and infectious diseases. Fine particles in smog are inhaled into the respiratory tract, which will cause harm to the respiratory system, such as bronchitis, chronic bronchitis, interstitial pneumonia and so on.

According to the report, chronic smog will also increase the risk of cancer, affect the nervous system, and lead to dizziness and headache. Every time PM2.5 in the air increases 10 microgram, brain function will decline for three years. In addition, smog weather is also the cause of traffic accidents. Hazy weather can easily lead to the recurrence of asthma, including bronchial asthma, bronchitis, allergic rhinitis, complications and cough. Recently, the temperature has dropped, and floating dust, smoke dust and dust mites in foggy weather may also be suspended in the fog. Inhalation of these allergens by patients with bronchial asthma will stimulate the respiratory tract and cause symptoms such as cough and asthma, including respiratory disorders.

Haze weather is the health killer of patients with cardiovascular and cerebrovascular diseases, especially the elderly with respiratory diseases and cardiovascular and cerebrovascular diseases. It is best not to go out for morning exercise in foggy weather, otherwise it may induce diseases and even heart attacks, which may be life-threatening. Because of the smog weather, the oxygen content in the air is reduced, and people easily feel chest tightness. Wet and cold fog can also cause cold stimulation, which can easily lead to vasospasm, blood pressure fluctuation and increased heart load.

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