Youth peer-based mental health programmes and supports in low- and middle-income countries: rapid review

BACKGROUND: Youth in low- and middle-income countries (LMICs) bear a disproportionate burden of mental health conditions, alongside low health-seeking behaviours and limited access to services. These gaps underscore the need for accessible strategies such as youth peer-based mental health programmes and supports (Y-PBMHPS). AIMS: To examine whether Y-PBMHPS can help address the mental health needs of LMIC youth. METHOD: We conducted a rapid review of peer-reviewed literature, searching Medline, PsycINFO, CINAHL, CAB Global Health, Science Citation Index and Social Sciences Citation Index for studies of Y-PBMHPS in LMICs published in English between 1 January 2002 and 19 September 2025. Two review authors performed title/abstract screening and full-text review. Study quality was assessed by one review author using Joanna Briggs Institute critical appraisal tools. The primary outcome was change in mental health status, expressed in standardised difference units. RESULTS: Of 6105 unique records identified, 329 studies were reviewed in full and 34 were included. All studies were conducted in Asia or Africa; 17 were quantitative studies (including randomised controlled trials), 9 were qualitative studies and 8 used quantitative designs with qualitative findings. Y-PBMHPS included counselling, psychotherapy, psychoeducation and self-help groups, with peers acting as leaders, facilitators, educators or service providers. Quantitative studies most frequently assessed anxiety and depression, reporting negligible to moderate effects. Qualitative findings indicated good fidelity, adherence and acceptability, alongside some feasibility challenges. CONCLUSIONS: Y-PBMHPS can broaden youth mental health support and services in LMICs. Clearer guidelines on peer selection, training and supervision and further research in other LMICs, including cost-effectiveness evaluations, would strengthen the evidence base.