{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T00:14:12Z","timestamp":1787789652091,"version":"build-2784847793"},"reference-count":85,"publisher":"MDPI AG","issue":"20","license":[{"start":{"date-parts":[[2025,10,21]],"date-time":"2025-10-21T00:00:00Z","timestamp":1761004800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>Background: Adolescent mental health is a growing public health concern, with increasing prevalence of anxiety, depression, and emotional dysregulation. While nutrition is a recognized factor in physical health, its role in mental well-being, especially through holistic models, remains underexplored. Objectives: This study examines a moderated mediation model in which perceived healthy eating (self-rated diet quality) was associated with positive mental health (PMH) in adolescents, mediated by stress management and moderated by peer social support. Methods: A cross-sectional study was conducted with a sample of 505 adolescents aged 13 to 15 years (mean age 13.62). Using PROCESS Model 14, we tested a moderated mediation model where perceived nutrition served as the predictor, stress management as the mediator, and PMH as the outcome. Peer support was included as a moderator of the mediation pathway. Gender, age, nationality and educational variables were controlled for in the analysis. Results: The model explained 36% of the variance in PMH. Perceived healthy eating was significantly associated with better stress management (B = 0.20, p &lt; 0.001), which in turn was related to higher levels of PMH (B = 6.38, p &lt; 0.001). Peer support played a moderating role between stress management and PMH. Conclusions: These findings underscore the importance of promoting nutritional awareness and adolescents\u2019 self-perception of healthy eating to support both physical and emotional well-being. Interventions should adopt a holistic approach that integrates emotional regulation strategies and leverages peer influence to enhance mental health outcomes. Given the alarming rates of mental health issues in youth, nutrition-based programs that incorporate psychosocial components may offer a promising avenue for prevention and promotion.<\/jats:p>","DOI":"10.3390\/nu17203305","type":"journal-article","created":{"date-parts":[[2025,10,21]],"date-time":"2025-10-21T14:24:02Z","timestamp":1761056642000},"page":"3305","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["From Healthy Eating to Positive Mental Health in Adolescents: A Moderated Mediation Model Involving Stress Management and Peer Support"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2781-3004","authenticated-orcid":false,"given":"Inmaculada C.","family":"Rodr\u00edguez-Rojo","sequence":"first","affiliation":[{"name":"Community Care and Social Determinants of Health (CUYDET), Nursing and Physiotherapy Department, Universidad de Alcal\u00e1, 28805 Alcal\u00e1 de Henares, Spain"},{"name":"Center for Cognitive and Computational Neuroscience (C3N), Universidad Complutense, 28040 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1521-9852","authenticated-orcid":false,"given":"Montserrat","family":"Garc\u00eda-Sastre","sequence":"additional","affiliation":[{"name":"Community Care and Social Determinants of Health (CUYDET), Nursing and Physiotherapy Department, Universidad de Alcal\u00e1, 28805 Alcal\u00e1 de Henares, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6307-5921","authenticated-orcid":false,"given":"Cecilia","family":"Pe\u00f1acoba-Puente","sequence":"additional","affiliation":[{"name":"Psychology Department, Universidad Rey Juan Carlos, 28933 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6589-1439","authenticated-orcid":false,"given":"Daniel","family":"Cuesta-Lozano","sequence":"additional","affiliation":[{"name":"Community Care and Social Determinants of Health (CUYDET), Nursing and Physiotherapy Department, Universidad de Alcal\u00e1, 28805 Alcal\u00e1 de Henares, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8262-5404","authenticated-orcid":false,"given":"Leonor","family":"Garc\u00eda-Rodr\u00edguez","sequence":"additional","affiliation":[{"name":"Nursing Department, University San Pablo-CEU, CEU Universities, 28660 Boadilla del Monte, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Patricia","family":"Bl\u00e1zquez-Gonz\u00e1lez","sequence":"additional","affiliation":[{"name":"Department of Nursing, Red Cross Nursing School, 28003 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Patricia","family":"Gonz\u00e1lez-Alegre","sequence":"additional","affiliation":[{"name":"Center of Mental Health, University Hospital Principe de Asturias, 28805 Alcal\u00e1 de Henares, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2293-1960","authenticated-orcid":false,"given":"Juan Manuel","family":"L\u00f3pez-Reina-Rold\u00e1n","sequence":"additional","affiliation":[{"name":"Community Care and Social Determinants of Health (CUYDET), Nursing and Physiotherapy Department, Universidad de Alcal\u00e1, 28805 Alcal\u00e1 de Henares, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1787-7795","authenticated-orcid":false,"given":"Raquel","family":"Luengo-Gonz\u00e1lez","sequence":"additional","affiliation":[{"name":"Community Care and Social Determinants of Health (CUYDET), Nursing and Physiotherapy Department, Universidad de Alcal\u00e1, 28805 Alcal\u00e1 de Henares, Spain"},{"name":"Group for Research in Nursing Care, Gregorio Mara\u00f1\u00f3n, Health Research Institute (IiSGM), 28009 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,10,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2030","DOI":"10.1016\/S0140-6736(19)31013-X","article-title":"Adolescence and mental health","volume":"393","author":"Blakemore","year":"2019","journal-title":"Lancet"},{"key":"ref_2","unstructured":"WHO (2025, September 01). 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