A new study by researchers at Columbia University Mailman School of Public Health found no changes in opioid outcomes among the general population with the states’ passage of medical and recreational marijuana laws. However, the findings also show decreases in opioid outcomes after the enactment of medical marijuana laws among people reporting cannabis use but no changes in opioid outcomes when laws for both medical and recreational use were enacted. The results are published in the International Journal of Drug Policy.  See the article here.