is weed or tobacco worse Are There Risks From Secondhand Marijuana Smoke? Early Science Says Yes – Houston Public Media Cannabis Users Under 50 Are
Cannabis Users Under 50 Are 6 Times More Likely to Have a Heart Attack The Effects of Marijuana on Your Body Marijuana and Vaping: Shadowy Past, Dangerous Present The New York Times Archive: Marijuana Shown to Be Less Damaging to Lungs Than Tobacco UC San Francisco Scientific Statement: Cannabis use shows substantial risks, no benefits for cardiovascular health; more research is critical American Heart Association
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