Jonathan Haidt's The Anxious Generation examines the sharp rise in anxiety and depression among adolescents, particularly Gen Z. Haidt argues that this surge stems from a fundamental shift from a "play-based childhood" to a "phone-based childhood," characterized by excessive screen time and limited real-world interaction. This change, he contends, has disrupted crucial developmental processes, particularly during puberty's sensitive periods. The book explores the negative impacts of social media, video games, and pornography, and offers recommendations for parents, schools, and policymakers to mitigate these harms and foster healthier development.