The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
A: Chronic smoke exposure triggers expansion of mucus-secreting goblet cells and an increase in ACE2. Quitting smoking causes a decrease in lung ACE2 levels, which can explain why smokers are susceptible to severe SARS-CoV-2 infections.
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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Quitting smoking causes a decrease in lung ACE2 levels, which can explain why smokers are susceptible to severe SARS-CoV-2 infections.
Chronic smoke exposure triggers expansion of mucus-secreting goblet cells and an increase in ACE2.