This is not a promotion and I have no association with the author, Jonathan Haidt,  or the book. The data is noteworthy. The Anxious Generation: How the Great Rewiring of Childhood is Causing an Epidemic of Mental Illness – In the summer of 2022, I was working on a book project — Life After Babel: Adapting to a world we can no longer share — about how smartphones and social media rewired many societies in the 2010s, creating conditions that amplify the long-known weaknesses of democracy. The first chapter was about the impact of social media on kids, who were the “canaries in the coal mine,” revealing early signs that something was going wrong. When adolescents’ social lives moved onto smartphones and social media platforms, anxiety and depression surged among them. The rest of the book was going to focus on what social media had done to liberal democracies. I quickly realized that the rapid decline of adolescent mental health could not be explained in one chapter—it needed a book of its own. So, The Anxious Generation is Volume 1, in a sense, of the larger Babel project…I begin The Anxious Generation by examining adolescent mental health trends. What happened to young people in the early 2010s that triggered the surge of anxiety and depression around 2012?”

See also The Atlantic [no paywall] – “Something went suddenly and horribly wrong for adolescents in the early 2010s. By now you’ve likely seen the statistics: Rates of depression and anxiety in the United States—fairly stable in the 2000s—rose by more than 50 percent in many studies from 2010 to 2019. The suicide rate rose 48 percent for adolescents ages 10 to 19. For girls ages 10 to 14, it rose 131 percent…”