Does Marijuana Have Carcinogens in It?

Question by : Does marijuana have carcinogens in it?
I saw the following on National Institute on Drug Abuse on the National Health Institute nih.gov site:

Numerous studies have shown marijuana smoke to contain carcinogens and to be an irritant to the lungs. In fact, marijuana smoke contains 50 to 70 percent more carcinogenic hydrocarbons than tobacco smoke.

Is this true? Thanks.

Best answer:

Answer by Peter R
actually, it does. i think the carcinogens in it makes the smell

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Nora Volkow, Director, National Institute on Drug Abuse National Institutes of Health – “Molecular Imaging in SUD: Opportunities for Translation into Basic and Clinical Neuroscience” from the Cellular Biology of Drug Addiction course 8/9/2013.

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