Massive youth mental health study aims to unravel why disorders cluster

NCT ID NCT07699159

First seen Jul 13, 2026 · Last updated Jul 14, 2026 · Updated 1 time

Summary

This observational study follows 1,620 adolescents and young adults (ages 11–24) who have two or more mental health conditions, such as anxiety, depression, or ADHD. Researchers will track participants over time using interviews, questionnaires, blood tests, and brain scans to identify factors that influence how these conditions develop and change. The goal is to better understand mental health multimorbidity in youth and find biomarkers that could guide future treatments.

What this could mean

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

What this could lead to
If successful, this study could reveal risk and protective factors that explain how multiple mental health conditions develop in youth, pointing toward better ways to predict, prevent, or treat them.
What could go wrong
This is an observational study, not a treatment trial, so it will not directly test any new therapy. The findings may take years to translate into clinical practice, and the complex data may not yield clear answers.

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As listed by the trial registrant

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

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Centre for Addiction and Mental Health (CAMH)

    RECRUITING

    Toronto, Ontario, M6J1H4, Canada

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

  • Children's Hospital of Eastern Ontario Research Institute

    RECRUITING

    Ottawa, Ontario, K1H 8L1, Canada

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

  • McMaster Children's Hospital, Hamilton Health Sciences

    RECRUITING

    Hamilton, Ontario, L8L 2X2, Canada

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

  • The Hospital for Sick Children

    RECRUITING

    Toronto, Ontario, M5G 1X8, Canada

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • The Royal Ottawa Mental Health Centre

    RECRUITING

    Ottawa, Ontario, K1Z 7K4, Canada

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

  • University of Calgary

    RECRUITING

    Calgary, Alberta, T2N 1N4, Canada

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••

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