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Since then, several studies have proven the critical role of nAChRs activation in modulating neuro-immune pathways, and nicotine has been investigated as an effective therapeutic in neurodegeneration and neuroinflammatory diseases [193, 194]

Essentially, the smoke interferes with the cleansing motion, causing smokers to cough and have more mucus

And froze once more

Given how long these products have been on the market, and that the health data we have is largely from industry-funded studies, which should be viewed with skepticism, we really dont have that much concrete data to say what the harms and risks of these products are yet, Kruse said.