The associations of medical marijuana policies with opioid-related health care utilization.

The findings indicate that the effects of medical marijuana policies on opioid-related hospitalizations and emergency department visits vary depending on the type of medical marijuana policy. Our findings indicate that the implementation of home cultivation of marijuana is positively associated with hospitalizations and emergency department visits related to opioids, suggesting that easier access to marijuana among opioid users may result in adverse health conditions that need treatment.