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Effects of cannabis smoking on the respiratory system: A state of the art review ScienceDirect Americans' Perceptions of Alcohol vs. Marijuana American Addiction Centers London Numerous studies show that smoking marijuana is associated with fewer health risks than smoking tobacco. Research from the University of California, Los Angeles, for instance, found no significant link between Smoking pot vs. tobacco: What science says about lighting up FOX 9 Minneapolis St. Paul Many people think cannabis smoke is harmless a physician explains how that belief can put people at risk

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