smoking cannabis vs cigarettes Study: Comparing Marijuana and Tobacco Use Cannabis use linked to increase
Cannabis use linked to increase in heart attack and stroke risk American Heart Association Comprehensive characterization of mainstream marijuana and tobacco smoke Scientific Reports Tobacco and Cannabis Use Data Washington State Department of Health Smoking marijuana may be more harmful to lungs than smoking cigarettes, study finds ABC News Cannabis Smoking in 2015 CHEST They compared weed, tobacco and non smoker's lungs
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