One of the most important lessons I learned in medical school was that in an emergency, you don’t have the luxury to wait for perfect information. You assess the available facts, you use your best judgment, and you act quickly.

The mental health crisis among young people is an emergency — and social media has emerged as an important contributor. Adolescents who spend more than three hours a day on social media face double the risk of anxiety and depression symptoms, and the average daily use in this age group, as of the summer of 2023, was 4.8 hours. Additionally, nearly half of adolescents say social media makes them feel worse about their bodies.

It is time to require a surgeon general’s warning label on social media platforms, stating that social media is associated with significant mental health harms for adolescents. A surgeon general’s warning label, which requires congressional action, would regularly remind parents and adolescents that social media has not been proved safe. Evidence from tobacco studies show that warning labels can increase awareness and change behavior. When asked if a warning from the surgeon general would prompt them to limit or monitor their children’s social media use, 76 percent of people in one recent survey of Latino parents said yes.