Cannabis use patterns and social and health effects in young adults
Official title: Trajectoires Individuelles de Consommation de Cannabis en Situation Habituelle et Observations de Leurs Modalités en Contexte Écologique
Run by Centre hospitalier de l'Université de Montréal (CHUM) · NCT07063589 · Data updated 2026-11-12
We will follow 18–24-year-olds who use cannabis at least weekly for two years to see if different patterns of product type, frequency, and dosage are linked to social and health outcomes.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years to 24 Years |
| Sex | All |
| Enrollment | 350 (estimated) |
| Sponsor | Centre hospitalier de l'Université de Montréal (CHUM) Academic / other |
| Locations | 1 site (Montreal, Quebec) |
| Status | Recruiting |
| Started | September 16, 2025 |
| Main results expected | August 2027 |
| Study ends | August 2027 |
| Registry record updated | December 24, 2025 |
| Trial ID | NCT07063589 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Young adults aged 18–24 who use cannabis at least one day per week, can read English or French, have a mobile phone, and are willing to comply with study procedures for two years.
✕Probably not a fit
People currently receiving or planning treatment for cannabis use disorder, those with a medical authorization for cannabis, or those who cannot commit to the study period (for example due to planned extended absence) are unlikely to benefit from participation.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a two-year observational cohort that enrolls regular cannabis users aged 18–24 and uses a mobile application to collect repeated information on frequency of use, product types, and cannabinoid dosages. Participants complete periodic surveys and mobile-based consumption logs to map how use patterns change over time. The study links these longitudinal use trajectories with social and health measures to characterize potential consequences during this developmental period. No experimental treatments are given; the project aims to generate detailed real-world data to inform prevention and harm-reduction strategies.
Why it matters
Potential benefit: If successful, the study could identify risky consumption patterns and inform targeted prevention or harm-reduction efforts for young adults.
How similar studies have gone: Previous longitudinal studies have linked heavy youth cannabis use to adverse outcomes, but detailed multi-factor tracking of product types and cannabinoid dosages over time in this age group is relatively novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * 18 to 24 years of age; * Cannabis use frequency of at least 1 day/week in the past three months; * Ability to speak and read French or English; * willingness to comply with all study procedures; * access to a mobile phone. Exclusion Criteria: * Planned extended absence during study period (e.g. pending legal action, surgery, incarceration, inpatient residential program) which, in the opinion of the research staff, might prevent completion of the study; * Current or anticipated treatment for cannabis use disorder, confirmed via self-report; * Medical document authorizing the use of cannabis for medical purposes; * Participation in clinical studies or undergoing other investigational procedures involving cannabis or cannabinoids administration.
Where it's running
-
Centre de recherche du Centre Hospitalier Universitaire de Montréal
Montreal, Quebec, Canada Recruiting
Study contacts
- Principal investigator: Didier Jutras-Aswad, MD, MS — Crchum
- Study coordinator: Pamela Lachance-Touchette, Ph.D.
- Email: pamela.lachance-touchette.chum@ssss.gouv.qc.ca
- Phone: 514-890-8000
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
vEAET-H: a virtual group emotional therapy for chronic pain patients using medical cannabis in Israel
This study tests a Hebrew, virtual, group-based emotional therapy to see if it can help reduce pain and improve emotional well-being in Israeli adults with chronic musculoskeletal pain who use medical cannabis.
-
Testing warning labels on cannabis packaging to see what design helps people notice risks
Researchers are testing different cannabis warning labels to see which designs make people notice health risks and think about their use more carefully.
-
Mobile app to help adults in Quebec use cannabis more safely
A mobile app is being tested to see if it helps adults who use cannabis non-medically in Quebec use cannabis more safely.
-
Feasibility of a perinatal smoking and cannabis cessation program
This study tests a perinatal program to help pregnant people quit tobacco and cannabis and stay smoke-free after birth.
-
Psychiatric Symptoms in Methamphetamine Psychosis With or Without Lifetime Cannabis Use
This study tests whether lifetime cannabis use changes the course and severity of psychiatric symptoms in people hospitalized with methamphetamine-induced psychosis.
-
Cannabis use and IV sedation during wisdom tooth removal
This project will see if people who use cannabis need different IV sedative doses or have different vital signs and breathing during wisdom tooth removal compared with people who don't use cannabis.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.