Socially Networked: The Impact of Social Media on Brain Development, a Systematic Review

This systematic review explores the neurological impact of social media (SM) use, examining structural and functional brain changes. Using PRISMA guidelines, 23 studies involving young adults were analyzed, focusing on addiction, reward systems, emotional well-being, and self-identity. Neuroimaging evidence revealed that excessive SM use is linked to reduced grey matter volume in key brain regions, such as the nucleus accumbens and anterior cingulate cortex, associated with reward processing. High SM usage activates reward circuitry, mirroring patterns seen in substance and behavioral addictions. Emotional effects include increased anxiety, depression, and diminished self-concept. Findings highlight the urgent need for standardized metrics of SM use and further research into its long-term implications on brain development and human relationships.