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Objective: Adolescent health and nutrition remain critical global public health priorities. Interpersonal communication (IPC) is increasingly utilized as a strategy to influence adolescents’ health-related behaviors across peer, family, school, healthcare, and digital contexts. However, evidence regarding its effectiveness remains heterogeneous. This systematic review synthesizes recent evidence on IPC interventions targeting adolescent health and nutrition outcomes. Methods: This systematic review followed PRISMA 2020 guidelines. Four databases (PubMed, Scopus, Web of Science, and CINAHL) were searched for studies published between January 2021 and March 2025. Of 4430 identified records, 3,912 titles and abstracts were screened after duplicate removal (n=518), and 126 full texts articles were assessed for eligibility. Fourteen studies met the inclusion criteria. Due to heterogeneity in study designs and outcome measures, findings were synthesized narratively. Results: Studies conducted across Asia, Africa, Europe and North America examined IPC delivered through peer-led communication, family-based discussions, teacher-facilitated programs, healthcare provider counseling, and digitally mediated exchanges. Most studies reported improvements in intermediate outcomes, including knowledge, self-efficacy, behavioral intentions, and attitudes. Several quasi-experimental and longitudinal studies suggested potential behavioral improvements; however, many cross-sectional and digital communication studies demonstrated associative rather than causal relationships. Conclusion: IPC interventions are consistently associated with favorable intermediate outcomes in adolescent health and nutrition promotion. However, robust evidence on sustained behavioral and objective health outcomes remains limited. Future research should employ rigorous longitudinal and experimental designs and integrate objective health indicators to strengthen causal inference and translational impact. Keywords: adolescent health, komunikasi antarpribadi, health promotion, nutrition behavior
Sari et al. (Fri,) studied this question.
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