Married people live healthier, happier, and longer lives, on average. They are better off financially and even have sex more often. But skeptics persistently wonder whether it is marriage itself that makes people healthier or whether it is just an illusion, a marker for something else. That debate will continue as long as liberals believe that sexual diversity is the key to human flourishing. But a new study from Sweden adds powerful new evidence that divorce hurts — and marriage helps — people live healthier lives. Sweden has a national registry system that allows scholars to look at essentially every