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Dr. Margaret Haney Responds: Is Marijuana Addictive?

Lady Gaga Says She Was Addicted to Marijuana:
November 13, 2013

Dr. Margaret Haney, director of the Marijuana Research Lab in the department of psychiatry at Columbia University Medical Center, told that about 10 percent of marijuana smokers will develop a dependence to the drug.

"Its not leading people to steal their grandmother's television set to buy drugs, but it becomes difficult for them to stop," she said.

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