Effectiveness of peer-led health behaviour interventions on adolescent’s mental health and wellbeing: a systematic review and meta-analysis

Abstract Mental health disorders affect 15% of youth aged 10–19 years globally, typically emerging before age 15. While school-based peer-led programs show promise in improving physical health behaviours by leveraging existing social networks, reducing stigma, and demonstrating high implementation f...

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Main Authors: Jacinta Brinsley, Matthew Schmidt, Rachel Curtis, Catherine EM Simpson, Jessica Edwards, Emily E. Eglitis, Georgia Gosse, Michael Broad, Bryony Jardine, Elizabeth Taddeo, Prerna Banati, Carol Maher
Format: Article
Language:English
Published: Nature Portfolio 2025-05-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-025-01053-8
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author Jacinta Brinsley
Matthew Schmidt
Rachel Curtis
Catherine EM Simpson
Jessica Edwards
Emily E. Eglitis
Georgia Gosse
Michael Broad
Bryony Jardine
Elizabeth Taddeo
Prerna Banati
Carol Maher
author_facet Jacinta Brinsley
Matthew Schmidt
Rachel Curtis
Catherine EM Simpson
Jessica Edwards
Emily E. Eglitis
Georgia Gosse
Michael Broad
Bryony Jardine
Elizabeth Taddeo
Prerna Banati
Carol Maher
author_sort Jacinta Brinsley
collection DOAJ
description Abstract Mental health disorders affect 15% of youth aged 10–19 years globally, typically emerging before age 15. While school-based peer-led programs show promise in improving physical health behaviours by leveraging existing social networks, reducing stigma, and demonstrating high implementation feasibility, their effectiveness for mental health outcomes remains unclear. This systematic review examined controlled trials of school-based, peer-led lifestyle interventions (physical activity, diet, or sleep) reporting mental health outcomes in adolescents aged 10–19 years. Six electronic databases were searched up to March 28, 2024. Seven studies met inclusion criteria, encompassing 7,060 adolescents from 151 schools across the UK, USA, Canada, and Norway. Interventions varied in frequency and duration, with six focusing on physical activity and one on diet. Meta-analyses revealed no significant effects for psychological difficulties (MD = 0.60, 95% CI -3.52 to 4.72; p = 0.32, k = 2), self-efficacy for physical activity (SMD = 0.18, 95% CI -3.08 to 3.44; p = 0.61, k = 2), or wellbeing (SMD = 0.0, 95% CI -2.94 to 2.94; p = 1.0, k = 2). These findings, while requiring cautious interpretation, highlight the pressing need for more comprehensive and rigorous research to better understand the impact of peer-led interventions on mental health outcomes.
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spelling doaj-art-848541f541ba403ebbf86557c39d7ebf2025-08-20T02:31:58ZengNature PortfolioScientific Reports2045-23222025-05-0115111110.1038/s41598-025-01053-8Effectiveness of peer-led health behaviour interventions on adolescent’s mental health and wellbeing: a systematic review and meta-analysisJacinta Brinsley0Matthew Schmidt1Rachel Curtis2Catherine EM Simpson3Jessica Edwards4Emily E. Eglitis5Georgia Gosse6Michael Broad7Bryony Jardine8Elizabeth Taddeo9Prerna Banati10Carol Maher11Alliance for Research in Exercise, Nutrition and Activity, Allied Health and Human Performance, University of South AustraliaAlliance for Research in Exercise, Nutrition and Activity, Allied Health and Human Performance, University of South AustraliaAlliance for Research in Exercise, Nutrition and Activity, Allied Health and Human Performance, University of South AustraliaAlliance for Research in Exercise, Nutrition and Activity, Allied Health and Human Performance, University of South AustraliaAlliance for Research in Exercise, Nutrition and Activity, Allied Health and Human Performance, University of South AustraliaAlliance for Research in Exercise, Nutrition and Activity, Allied Health and Human Performance, University of South AustraliaAlliance for Research in Exercise, Nutrition and Activity, Allied Health and Human Performance, University of South AustraliaAlliance for Research in Exercise, Nutrition and Activity, Allied Health and Human Performance, University of South AustraliaCentre for Social Impact, Flinders UniversityAlliance for Research in Exercise, Nutrition and Activity, Allied Health and Human Performance, University of South AustraliaDepartment of Maternal, Newborn, Child and Adolescent Health and Ageing, World Health OrganizationAlliance for Research in Exercise, Nutrition and Activity, Allied Health and Human Performance, University of South AustraliaAbstract Mental health disorders affect 15% of youth aged 10–19 years globally, typically emerging before age 15. While school-based peer-led programs show promise in improving physical health behaviours by leveraging existing social networks, reducing stigma, and demonstrating high implementation feasibility, their effectiveness for mental health outcomes remains unclear. This systematic review examined controlled trials of school-based, peer-led lifestyle interventions (physical activity, diet, or sleep) reporting mental health outcomes in adolescents aged 10–19 years. Six electronic databases were searched up to March 28, 2024. Seven studies met inclusion criteria, encompassing 7,060 adolescents from 151 schools across the UK, USA, Canada, and Norway. Interventions varied in frequency and duration, with six focusing on physical activity and one on diet. Meta-analyses revealed no significant effects for psychological difficulties (MD = 0.60, 95% CI -3.52 to 4.72; p = 0.32, k = 2), self-efficacy for physical activity (SMD = 0.18, 95% CI -3.08 to 3.44; p = 0.61, k = 2), or wellbeing (SMD = 0.0, 95% CI -2.94 to 2.94; p = 1.0, k = 2). These findings, while requiring cautious interpretation, highlight the pressing need for more comprehensive and rigorous research to better understand the impact of peer-led interventions on mental health outcomes.https://doi.org/10.1038/s41598-025-01053-8Peer-led interventionsAdolescentsHealthy lifestyleMental healthWellbeing
spellingShingle Jacinta Brinsley
Matthew Schmidt
Rachel Curtis
Catherine EM Simpson
Jessica Edwards
Emily E. Eglitis
Georgia Gosse
Michael Broad
Bryony Jardine
Elizabeth Taddeo
Prerna Banati
Carol Maher
Effectiveness of peer-led health behaviour interventions on adolescent’s mental health and wellbeing: a systematic review and meta-analysis
Scientific Reports
Peer-led interventions
Adolescents
Healthy lifestyle
Mental health
Wellbeing
title Effectiveness of peer-led health behaviour interventions on adolescent’s mental health and wellbeing: a systematic review and meta-analysis
title_full Effectiveness of peer-led health behaviour interventions on adolescent’s mental health and wellbeing: a systematic review and meta-analysis
title_fullStr Effectiveness of peer-led health behaviour interventions on adolescent’s mental health and wellbeing: a systematic review and meta-analysis
title_full_unstemmed Effectiveness of peer-led health behaviour interventions on adolescent’s mental health and wellbeing: a systematic review and meta-analysis
title_short Effectiveness of peer-led health behaviour interventions on adolescent’s mental health and wellbeing: a systematic review and meta-analysis
title_sort effectiveness of peer led health behaviour interventions on adolescent s mental health and wellbeing a systematic review and meta analysis
topic Peer-led interventions
Adolescents
Healthy lifestyle
Mental health
Wellbeing
url https://doi.org/10.1038/s41598-025-01053-8
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