There are a number of theories on what's driving the increase in suicide among the middle-aged. W. Bradford Wilcox wrote in The Atlantic that the increase may be owed, at least in part, to an erosion of traditional support systems. Wilcox directs the National Marriage Project at the University of Virginia and co-authored "Gender and Parenthood: Biological and Social Scientific Perspectives." He cited French sociologist Emile Durkeim's theories that men are more apt to kill themselves when they are "disconnected from society's core institutions," like marriage an...