is weed or tobacco more harmful Smoking marijuana may be to lungs than smoking cigarettes, study finds Secondhand bong smoke worse than
Secondhand bong smoke worse than that from tobacco, study finds Cannabis The Guardian Smoking marijuana can raise risk of lung disease, chest scans indicate Young people 'see cannabis as safer than alcohol' Scientific Statement: Cannabis use shows substantial risks, no benefits for cardiovascular health; more research is critical American Heart Association Yes, Smoking Weed Is Bad for Your Heart Cannabis and heart concerns: A closer look Harvard Health
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