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New Media and Addiction in Youth New media, such as digital games, social media, and video streaming services, have emerged as fundamental channels for socialization and leisure activities among young people. Platforms such as TikTok, Fortnite, and YouTube do not only provide entertainment, enjoyment, and opportunities for social connection, but also carry the risk of excessive use. Particularly vulnerable youth, who turn to media to escape real-world problems and conflicts, can quickly become trapped in a vicious cycle, resulting in problematic usage habits with significant psychosocial consequences. This review presents the current state of research on Digital Media Use Disorders (DMUD) in youth. It outlines diagnostic criteria, presents recent data on epidemiology, etiology, and treatment approaches, and discusses implications for prevention. DMUD in youth remains a serious health issue in the aftermath of the pandemic. Parents and schools play a crucial role in guiding children and adolescents towards media literacy and self-regulated use of digital media. But also game and platform providers, who often employ manipulative mechanisms that prevent a self-regulated use, need to be held accountable. The introduction of the European Digital Services Act represents a crucial step in this direction.