When you go to a medical appointment, your doctor may ask you several questions. Do you smoke? Have you been getting exercise? Are you sleeping? But rarely do they ask: are you lonely? U.S. Surgeon General Vivek Murthy believes we are suffering from an epidemic of loneliness. This week, we revisit our 2020 conversation with Murthy about the importance of human connection to our physical and mental health, and how we can all strengthen our social ties.