is smoking weed safer than tobacco The science clear: Marijuana is • Daily Montanan Marijuana may be even safer

Marijuana may be even safer than previously thought, researchers say The Washington Post Measuring PM2.5 concentrations from secondhand tobacco vs. marijuana smoke in 9 rooms of a detached 2 story house ScienceDirect Does Marijuana Cause Lung Cancer? Keck Medicine of USC Seattle metro area is one of just three in America where marijuana use tops nicotine, data shows The Seattle Times Don't smoke it with tobacco: scientists suggest ways to make cannabis safer Cannabis The Guardian

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