A working study released by Montana State University, the University of Oregon and the University of Colorado Denver found that medical marijuana "had no statistical significant impact" on teen marijuana use, but had a negative impact on the consumption of cocaine, which declined 1.9 percent in areas that had legalized medical marijuana.
The data [covering 13 states from 1993 to 2009] was collected from the Center for Disease Control’s annual Youth Risk Behavior Survey, which is often cited by the nation’s top law enforcement officials when discussing drug policy.
The study contradicts Gil Kerlikowske, director of the Office of National Drug Control Policy, who recently claimed that medical marijuana sends the “wrong message” to high school students.
It also contradicts U.S. Attorney John Walsh crusades against Colorado medical marijuana dispensaries located within 1,000 feet of schools.
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The researchers concluded: “Our results are not consistent with the hypothesis that the legalization of medical marijuana caused an increase in the use of marijuana and other substances among high school students.”
The study, currently in draft form, was published Monday by the Bonn, Germany Institute for the Study of Labor.