States that permit qualified patients to access medical marijuana via dispensaries possess lower rates of opioid addiction and overdose deaths, according to a study published by the National Bureau of Economic Research, a non-partisan think-tank.
Researchers from the RAND Corporation and the University of California, Irvine assessed the impact of medical marijuana laws on problematic opioid use, as measured by treatment admissions for opioid pain reliever addiction (compiled from the years 1992 to 2012) and by state-level opioid overdose deaths (compiled from the years 1999 to 2013).
