NORML Health Economics. A team of investigators from Harvard Medical School and the University of Kentucky assessed the relationship between the enactment of medical-use and adult-use legalization laws and opioid prescriptions for adults (ages 18 to 64) enrolled in employee-sponsored health insurance programs. Authors reported, “[T]he implementation of medical marijuana laws (MMLs) and recreational marijuana laws (RMLs) reduced morphine milligram equivalents per enrollee by seven percent and 13 percent, respectively.” Medical cannabis access was predominantly associated with reductions in older enrollees (those ages 55 to 64), while adult-use access was predominantly associated with reductions among younger and middle-aged enrollees (those ages 35 to 54). Those who reported possessing physical access to retail marijuana sales experienced the greatest percentage decrease in opioid prescription dosages.