Research Focuses on Marijuana's Harm, and Ignores Its Medical Benefits

Is America's scientific research biased to focus on the harmful effects of drugs?

That was one of the questions at the heart of a congressional hearing this summer seeking to understand more comprehensively the scientific evidence related to marijuana. And it was how Dr. Nora Volkow, director of the National Institute on Drug Abuse, found herself being grilled by Rep. Gerald Connolly, D-Va.

"Dr. Volkow, your testimony seems to completely disregard lots of other data," he accused.

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