A “profound risk.” That’s what the surgeon general, Dr. Vivek Murthy, says social media use can pose to the mental health of children and adolescents. Yes, social media can have benefits—helping people feel isolated make meaningful connections among them—but the downsides, Murthy argues in an advisory, are significant: sleep disruption, repeated exposure to inappropriate content that can “normalize” self-harm, cyberbullying, and on and on. In addition to cautioning parents about their kids’ use of social media, the surgeon general recommends families establish “media plans” with their kids and keep devices away during meal times.