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A Self-Guided Digital Mental Health Promotion Service Targeting Young People: Protocol for a Randomized Controlled
Sofie Have Hoffmann1, Amalie Oxholm Kusier1, Isabelle Pascale Mairey1
1National Institute of Public Health, University of Southern Denmark, Copenhagen K, Denmark.
JMIR Research Protocols
|September 10, 2025
Summary
This study evaluates Mindhelper, a digital mental health service for young people, to determine its effectiveness and cost-effectiveness. Findings will inform scalable interventions for youth mental health challenges.
Area of Science:
- Digital mental health
- Youth well-being
- Public health interventions
Background:
- Rising rates of poor mental health in young people globally.
- Limited help-seeking behavior among youth despite perceived benefits of digital support.
- Lack of evidence on the effectiveness and cost-effectiveness of self-guided digital mental health services like Mindhelper.
Purpose of the Study:
- To evaluate the effectiveness of Mindhelper on mental health, well-being, psychological functioning, help-seeking intentions, and body appreciation in young people aged 15-25.
- To assess the cost-effectiveness of the Mindhelper service.
- To build upon previous feasibility study results.
Main Methods:
- Randomized controlled trial recruiting 4910 participants aged 15-25 via social media.
- Intervention group receives information about Mindhelper; control group does not.
- Self-assessed outcomes collected via online surveys at baseline and 2, 6, 12 weeks; intention-to-treat analysis.
- Qualitative interviews and cost-effectiveness analysis included.
Main Results:
- Data collection ongoing; 2613 participants enrolled as of August 2025.
- Primary outcome results expected in the second half of 2026.
- Full results pending completion of data analysis in early 2026.
Conclusions:
- The study will provide crucial evidence on the effectiveness of self-guided digital mental health promotion for young people.
- If effective, Mindhelper offers a scalable, potentially low-cost solution to address rising youth mental health issues and primary care challenges.

