PBS NewsHour

Patients frustrated by medical marijuana research roadblocks

Clip: 07/06/2016 | 9m 20s

Lenny and Amy’s 5-year-old son has epilepsy. When conventional medications caused terrible side effects, they started giving him a daily drop of cannabis oil, with dramatic results. But it’s a calculated risk: While there is anecdotal evidence of cannabis’ effectiveness, scientists face research roadblocks because it’s a schedule 1 controlled substance. Science correspondent Miles O’Brien reports.

Aired: 07/06/16

Rating: NR

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