Confined to our homes, many of us are experiencing a newfound appreciation for our social relationships. What we may not realize \u2014 and what physicians and researchers have only recently started emphasizing \u2014 is the importance of these connections to our physical health. This week, we talk with former U.S. Surgeon General Vivek Murthy about why he considers loneliness a matter of public health, and how we can all deepen our social ties.