Watch: 6 Popular Myths About Marijuana Debunked By Dr. Rachel Knox

Does cannabis smoke cause lung cancer? Is marijuana addictive? Can you kill brain cells with cannabis? How about schizophrenia? Are people more likely to become schizophrenic after using cannabis?

Dr. Rachel from The CannaMD's got together with her sister, Dr. Jessica Knox and made a list of popular myths. Watch as she shares the latest discoveries and research on the subject of cannabis.

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