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    Pot Smokers May Face Greater Risk of Alcohol Abuse

    Marijuana users also less likely to quit drinking, researchers say

    WebMD News from HealthDay

    By Steven Reinberg

    HealthDay Reporter

    TUESDAY, March 8, 2016 (HealthDay News) -- People who smoke pot may be five times more likely to develop a problem with alcohol, such as addiction, a new study says.

    Marijuana users who have an alcohol problem may also be less likely to quit drinking, the researchers said.

    "Many people focus on possible negative effects of cannabis use itself, in terms of developing a cannabis use problem or the impact of cannabis use on brain function," said study lead researcher Renee Goodwin.

    "Our results suggest that even in the absence of a cannabis use problem, using marijuana appears to increase vulnerability to developing an alcohol use problem," said Goodwin, an adjunct associate professor of epidemiology at Columbia University's Mailman School of Public Health in New York City.

    The study only showed an association between marijuana use and alcohol dependence. It did not prove a cause-and-effect relationship.

    The study included more than 27,000 U.S. adults. When they first used marijuana, none of the participants had an alcohol problem -- defined in the study as receiving a diagnosis of either alcohol abuse or alcohol dependence.

    Adults who used marijuana over the following three years had five times higher odds of developing an alcohol use problem, compared with those who didn't use marijuana, the researchers found.

    Also, problem drinkers who used marijuana were less likely to be in recovery for alcohol abuse three years later compared to those who didn't use marijuana, the study authors said.

    The study was funded by the U.S. National Institutes of Health and was published online recently in the journal Drug and Alcohol Dependence.

    "Awareness of the possible increased risk of developing alcohol use problems associated with marijuana use is important. Especially, perhaps, among younger people who are a vulnerable population in terms of the onset of alcohol use problems and among people with other risk factors for alcohol use problems, such as a family history of alcohol use disorders," Goodwin said.

    Treatment for alcohol use problems usually includes screening for other substance use disorders. "But, even use of marijuana appears to be a barrier to recovery from alcohol use disorders, which means screening may be useful for treatment planning," she said.

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