Human study · Research · 11 May 2020
WHO statement: Tobacco use and COVID-19
Source: WHO
What the research found
Tobacco kills more than 8 million people globally every year. More than 7 million of these deaths are from direct tobacco use and around 1.2 million are due to non-smokers being exposed to second-hand smoke. Tobacco smoking is a known risk factor for many respiratory infections and increases the severity of respiratory diseases. A review of studies by public health experts convened by WHO on 29 April 2020 found that
Evidence level: Human study. A study in people, but an association isn't proof of cause.
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