Cannabis-Induced Psychosis in Teenagers and Young Adults: Risk Factors, Detection, Management

Cannabis use is extremely common among adolescents and young adults, with an estimated 14% of students in the 10th grade, 23% of students in the 12th grade, and 22% of college students and young adults engaging in at least monthly use in 2016.1 In 2015, 1.8 million adolescents (aged 12-17 years) and 6.9 million young adults (aged 18-25 years) were current users of cannabis.2 Moreover, the problem is increasing: 30-day prevalence of use among students in the 12th grade rose from 19% in 2007 to 23% in 2017.3 There is even higher use in Canada: In 2013, an estimated 28% of youths aged 11 to 15 years admitted to using cannabis at least once a year, and a high number reported weekly or daily use.4

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