Launched in January 2024, a multidisciplinary commission of experts studied the impact of screen time on the lives of children and adolescents. After three months of hearings, during which approximately 100 specialists and 150 young people were interviewed, the report *In Search of Lost Time* highlights proven risks to physical health. This excessive screen time, particularly on social media, can harm the mental health of adolescents who are already in vulnerable situations. This concerning situation is marked by social and regional inequalities.