The evidence is mounting that allowing access to marijuana, used medicinally or recreationally, could be an answer to the opioid crisis. On almost a weekly basis, a new study emerges confirming the pain-killing properties of cannabis, or finding that states with medical cannabis laws have lower rates of opioid use and abuse or opioid-related overdose deaths, as well as hospitalizations, traffic fatalities, and drug treatment admissions related to opioids.