All press releases

    What behaviours are associated with cannabis use among young adults?

    Notice of release

    Québec, December 15, 2022. – Taking up smoking, heavy drinking and hyperactive behaviours in early adolescence are associated with cannabis use later in adolescence or in early adulthood. This is one of the findings from the most recent analysis of the data from the Québec Longitudinal Study of Child Development (QLSCD).

    As part of this study, the Institut has been following a cohort of young people born in Québec in 1997–1998 from the beginning of their lives. Thanks to data collection rounds carried out when they were 15, 17 and 20 years of age, before the legalization of cannabis, the analysis shows how cannabis use has evolved and highlights certain behaviours that predispose teenagers and young adults to use cannabis.

    It is no surprise that the proportion of young people who have used cannabis increases between the age of 15 and 20. The results also show that regular cannabis use (once a week or more) at age 20 is mainly due to taking up smoking at an early age (at age 15 or earlier) and already being a regular cannabis user in adolescence.

    Read the highlights

    Read the full analysis (PDF, 1,31 Mo)

    Media relations
    Information and Documentation Centre

    Phone: 418-691-2401
    or 1-800-463-4090 (toll-free in Canada and the United States)

    Was the information on this page useful to you?