is smoking weed as harmful as cigarettes marijuana can raise risk of lung disease, chest scans indicate Mythbusters: Cannabis 20 times more

Mythbusters: Cannabis 20 times more carcinogenic than tobacco? NZ Drug Foundation Cannabis users who put tobacco in joints 'more likely to be addicted' Drugs The Guardian What does smoking marijuana actually do to your lungs? Even if you say you don't smoke, your lungs may say otherwise. Dr. Ali Z. Jiwani explains what's really going on and Marijuana and Your Lungs: Is Vaping Safe for People with COPD? Marijuana and Your Skin: The Good, the Bad, and the Ugly

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