is weed worse than cigarettes for your lungs Marijuana smokers at higher risk lung damage Mythbusters: Cannabis 20 times more
Mythbusters: Cannabis 20 times more carcinogenic than tobacco? NZ Drug Foundation Comprehensive characterization of mainstream marijuana and tobacco smoke Scientific Reports Smoking marijuana may be more harmful to lungs than smoking cigarettes, study finds ABC News Cannabis Smoking in 2015 CHEST Pulmonary Hazards of Smoking Marijuana as Compared with Tobacco New England Journal of Medicine
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