is marijuana smoke as bad as cigarette smoke like smoke; it's important to know what you breathe in. Learn more at the link in the comments The good, bad, and unknown
The good, bad, and unknown about marijuana's health effects STAT Does Marijuana Cause Lung Cancer? Smoking marijuana may be more harmful to lungs than smoking cigarettes, study finds ABC News Are There Risks From Secondhand Marijuana Smoke? Early Science Says Yes Houston Public Media Smoking cannabis doesn't carry same risks as tobacco, UCLA study finds Emphysema In Marijuana Smokers RSNA
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