If I asked you which would be easier to tolerate -- hunger or loneliness -- what would you say? Hopefully, none of you have ever suffered through a prolonged lack of food or social intimacy -- both terrible circumstances far too many people are grappling with in this pandemic.  But on the question of which is more corrosive to our mental health, studies suggest they're two sides of the same coin: People who are forced to be isolated crave social interactions similarly to the manner a famished individual longs for food.  After one day of total isolation, the sight of people having fun together activates the same brain region that lights up when someone who hasn't eaten all day sees a picture of a bowl of scrumptious spaghetti. This bolsters the argument that positive social interactions aren't simply good-to-haves, but a basic human need. And acute loneliness, for its part, is an adverse state that drives people to repair what is lacking, much like hunger.  In both cases, ...