Study: No Increase In Problematic Cannabis Use

ST. LOUIS, MO — The prevalence of problematic cannabis is decreasing, according to data published in the journal JAMA Psychiatry.

Investigators at the Washington School of Medicine in St. Louis assessed trends in marijuana use and in the prevalence of marijuana use disorders during the years 2002 to 2013. Researchers determined that the self-reported use of cannabis by adults increased an estimated 19 percent, but that reports of cannabis-related problems actually declined during this period.

“We’re certainly seeing some increases in…