Marijuana use linked to other substance use disorder risk

Posted on: February 22, 2016 9:00 am

Marijuana smokers may be much more likely to develop addiction to alcohol and other drugs than those who do not use marijuana, according to a new study published in JAMA Psychiatry. The study featured interviews with almost 35,000 adults 18 and over, each interviewed three years apart. Nearly 1,300 of those interviewed were marijuana users at the time of the first interview. Three years later, two-thirds of the marijuana users a substance use disorder of some kind, contrasted with fewer than 20 percent of those who had not used marijuana in the previous year. The highest rates of substance use disorders were among those who used marijuana at least once per month. The study's authors said, "Within the general population, cannabis use is associated with an increased risk for several substance use disorders. Physicians and policy makers should take these associations of cannabis use under careful consideration."