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Young people with chronic or severe depression face an elevated risk of developing a problem with cannabis by the time they reach 18, research suggests.
For the new study in the journal Addiction, researchers interviewed 521 students recruited from four Seattle public middle schools. Researchers used data from annual assessments when students were ages 12 to 15 and then again when they were 18.
“The findings suggest that if we can prevent or reduce chronic depression during early adolescence, we may reduce the prevalence of cannabis use disorder,” says lead author Isaac Rhew, research assistant professor of psychiatry and behavioral sciences at the University of Washington School of Medicine.
What researchers called “a 1 standard deviation increase” in cumulative depression during early adolescence was associated with a 50 percent higher likelihood of cannabis-use disorder in the study.
... read more at: http://www.futurity.org/teenagers-marijuana-depression-1496322-2/