Social media has changed the world. There are good and bad things about it. One bad thing is that it can cause mental health problems. This is something  USA's top doctor wants to address. U.S. Surgeon General Vivek Murthy wants social media companies to display mental health warnings on their platforms. He is particularly worried about  harm  platforms do to young people. He said algorithms lead youngsters to extreme sexual and violent content. Dr Murthy said: "It is time to require  surgeon general's warning label on social media platforms, stating that social media is associated with significant mental health harms for adolescents." He said laws were also needed to keep young people safe online.
Dr Murthy has campaigned for tighter controls of social media for many years. In 2023, he warned that social media presented, " profound risk of harm to  mental health and well-being of children and adolescents". His recent warning is in  guest essay published by  New York Times. He wrote: "The mental health crisis among young people is  emergency. Social media has emerged as  important contributor." He has concerns about how long young people spend online. He said youngsters "who spend more than three hours  day on social media face double  risk of anxiety and depression symptoms". Murthy thinks online warnings will help, just as warnings on cigarettes have helped.