Ottawa study aims to help homeless youth cut back on tobacco and drugs

NCT ID NCT04812613

ENROLLING_BY_INVITATION Knowledge-focused Sponsor: Ottawa Hospital Research Institute Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at tobacco, cannabis, and other drug use among homeless and at-risk youth in downtown Ottawa. Researchers will follow 520 participants aged 16 and older who are homeless or insecurely housed and have a history of cannabis use and mental illness. The goal is to understand their substance use patterns and test a 6-month support program that includes peer support and a mental health nurse to help reduce use.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: peer support and a licensed mental health and substance use nurse
What this could lead to: If successful, this could point toward effective community-based programs to reduce substance use in at-risk youth.
What could go wrong: This is an early, observational study with no control group, so it cannot prove cause and effect. Results may not apply to other cities or populations.

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Conditions

The condition(s) this trial relates to.

nicotine dependence psychiatric disorder substance abuse substance-related disorder Tobacco Use

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

CANNABIS USE SUBSTANCE USE TOBACCO USE

Contacts and locations

Locations

The Bridge Engagement Centre

Ottawa, Ontario, K1K 4B7, Canada

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