To be honest, I’m not much of a joiner. I have a lot of great friends, but I don’t belong to many other social groups. I’m not on a sports team, nor do I attend a specific church or work for a particular charity. I guess my thought is that spreading myself thin that way might be bad for my well-being. New research suggests otherwise. A longitudinal study in Britain has found that people who belong to more groups—and, specifically, more varied types of groups—may be happier and healt...
