Social Media and Mental Health: A Critical Review of Psychological Impacts and Future Research Directions

Abstract

Social media is now a part of our everyday lives, affecting the way we communicate, share information, entertain ourselves, and connect with others in the many communities to which we belong. While there are many benefits connected with social media use, there has been rising scholarly attention to the potential psychological effects of excessive and problematic social media use. This study critically analyzes the available literature to explore the association between social media activity and mental health outcomes including depression, anxiety, stress, loneliness, self-esteem, sleep disruptions and psychological well-being. Systematic review approach was used, using peer-reviewed journal articles, systematic reviews and meta-analyses published between 2015 and 2026. The findings suggest that general social media use is relatively weak and inconsistent with mental health outcomes, whereas problematic social media use is consistently associated with greater levels of depression, anxiety, psychological distress and lower levels of well-being.Core psychological mechanisms driving these interactions were identified as social comparison, cyberbullying, fear of missing out (FOMO), and sleep disruption. The research also points to social media’s benefits, including social support, community participation, access to knowledge and emotional expression. Furthermore, the paper addresses methodological shortcomings in previous research and suggests future initiatives with a focus on longitudinal designs, platform-specific research, objective behavioral measures, and artificial intelligence-assisted mental health interventions. The findings add to the growing knowledge of the complicated link between social media and mental health and provide important implications for researchers, educators, policy makers and mental health providers.