A study recently published in the American Journal of Psychiatry has shown a positive association between marijuana use and a greater risk of abusing opioids. The study examined data from two time periods of the National Epidemiological Survey on Alcohol and Related Conditions, and looked at the responses of more than 34,000 adults. Its authors found that marijuana use during the first time period was associated with increased nonmedical prescription opioid use and opioid use disorder during the second, including among adults with pain.