Much less than: smoking tobacco. Nicotine is thought to be the culprit behind cardiovascular disease in smokers, so taking in nicotine by any route, whether nicotine in combusted tobacco, snuff, chewing tobacco or nicotine gum, patches, lozenges etc., over a long period of time, could have some risks. However, it is almost certainly less harmful than continuing to smoke cigarettes.
Answered 9/1/2020
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