Scrolling has become the background noise of adolescence. Between homework, friendships and identity struggles, European teenagers now spend around three hours a day on social media. That number has doubled since 2010. At the same time, depression and anxiety among young people have sharply increased. Correlation is not causation — but pretending there is no connection is irresponsible.

Several studies show that teenagers who spend the most time on platforms such as Instagram or TikTok report significantly higher levels of depressive symptoms — in some cases between 13 and 66 percent higher than light users. A 2017 U.S. study of more than half a million adolescents found a 33 percent increase in depressive symptoms between 2010 and 2015. The rise happened alongside the mass adoption of smartphones. Even if social media is not the sole cause, it clearly amplifies existing vulnerabilities: body image pressure, fear of missing out and cyberbullying.

What worries me most is not only the content, but the design. Platforms are built on attention. Notifications, endless scroll and algorithmic recommender systems are not neutral tools — they are engineered to keep users online. For a developing brain, especially between ages 9 and 16, this constant stimulation affects emotional regulation and impulse control. Research suggests screen exposure can influence areas like the prefrontal cortex and the amygdala, both linked to anxiety and decision-making.

Europe is not passive in this debate. The European Union has introduced the Digital Services Act and a Better Internet for Kids strategy, and the Commission recently announced an inquiry into addictive design. Compared to the United States, where regulation often focuses on platform liability and free speech battles, the EU is taking a more precautionary, child-centred approach. The UK’s Online Safety Act also moves in this direction. But implementation remains slow, and tech companies still shape the digital environment faster than policymakers react.

Stronger measures are needed. Algorithm transparency should become mandatory. Age verification systems must be more robust. Platforms could introduce automatic time limits for minors and clearer warnings about edited images. Schools should teach digital literacy not as an optional workshop, but as a core subject. And governments must fund independent long-term research instead of relying on data controlled by the platforms themselves.

Social media is not inherently evil. For isolated teenagers, it can offer community and support. But when business models depend on keeping children hooked, mental health becomes collateral damage. Europe has the tools to lead globally in protecting young users. The real question is whether it will act fast enough.