Marijuana may lead non-smokers to cigarettes

(Columbia University's Mailman School of Public Health) While cigarette smoking is declining, marijuana use is rising and, disproportionately, marijuana users also smoke cigarettes. Our new study reports that cannabis use was associated with an increased initiation of cigarette smoking among non-cigarette smokers, and that adults who smoke cigarettes and use cannabis are less likely to quit smoking cigarettes than those who do not use cannabis. Former smokers who use cannabis are also more likel...