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Nicotine is the addictive chemical in tobacco that makes it so hard for smokers to give up their habit

Ethics declarations Ethics approval and consent to participate This study was carried out according to the Declaration of Helsinki principles and approved by the local Ethical Committee (Comitato Etico di Brescia, ASST degli Spedali Civili, Brescia, Italia, registration number NP3873)

Maybe the key point here is less whether Roehrss theory fits these and other accounts exactly anecdotes only take us so far and more that theres an urgent, unmet-thanks-to-the-feds need for more research into marijuana and its effects, especially as the decriminalization and legalization trains continue thundering onward

Respiratory health effects of exposure to environmental tobacco smoke

Thermal injuries are another concern