is smoking cigarettes worse than smoking pot Marijuana may be more harmful to lungs cigarettes, study suggests Survey: College kids smoked more

Survey: College kids smoked more pot than cigarettes last year Smoking marijuana may be more harmful to lungs than smoking cigarettes, study finds ABC News The science is clear: Marijuana is safer than tobacco Daily Montanan Study: Comparing Marijuana and Tobacco Use CannaMD Marijuana Doctors & Cards Smoking pot vs. tobacco: What science says about lighting up FOX 9 Minneapolis St. Paul Many Americans wrongly believe exposure to marijuana smoke is safer than tobacco, study finds CNN

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