By Steve Elliott
States with medical marijuana have seen the number of admissions to drug rehab facilities for pain medication and opioid overdoses decrease by 15 percent and 16 percent respectively, according to a new paper from the National Bureau of Economic Research. "Our findings suggest that providing broader access to medical marijuana may have the potential benefit of reducing abuse of highly addictive painkillers," the researchers concluded.
Other studies have examined the relationship between legal cannabis use and opioid overdose rates, but this is the first study to track addiction to opioids, as well, reports Katherine Ellen Foley at Quartz.
The paper builds on previous work showing that "states with medical marijuana laws on the books saw 24.8 percent fewer deaths from painkiller overdoses compared to states that didn't have such laws," reports Christopher Ingraham at The Washington Post. But the new paper's findings are even more compelling -- it uses more data, and the authors drew on a broader range of statistical methods to test the validity of their data.