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Social Media, Identity, and Mental Health: A Cross-Disciplinary Review of Challenges and Opportunities

Michael Mbiriri

Abstract

The proliferation of social media has fundamentally reshaped human interaction, identity development, and psychological well-being, presenting a complex matrix of challenges and opportunities. This study provides a cross-disciplinary review synthesizing data from psychology, sociology, media studies, and public health to explore the dualistic impact of social media on identity and mental health. Drawing on peer-reviewed studies, meta-analyses, and international reports published between 2018 and 2025, this review critically assesses the paradoxical effects of digital platforms. Evidence indicates that social media can facilitate positive identity construction, enhance peer connection, and improve access to mental health resources, particularly for marginalized and geographically isolated populations. It offers avenues for self- expression, community support, and health information dissemination, thereby fostering resilience and collective well-being. Conversely, extensive literature underscores significant risks: compulsive use, cyberbullying, misinformation, and social comparison are strongly associated with increased anxiety, depression, and identity instability, especially among adolescents and young adults. From a sociological perspective, online identities often oscillate between authenticity and performance, challenging the stability of self-concept in digital contexts. The intellectual contribution of this study lies in its synthesis of diverse disciplinary insights to advance a nuanced understanding of social media's impact—neither universally beneficial nor wholly harmful. It bridges psychological theories of the self, sociological analyses of identity, and public health approaches to well-being. Practically, the findings inform interventions for educators, policymakers, and mental health professionals, emphasizing the critical roles of digital literacy, identity support, and ethical platform design in promoting healthier online engagement. The review concl

Keywords

social mediamental healthidentitydigital wellbeingcross-disciplinary reviewpsychological well-beingsecondary data

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