It's not so much what you do that matters, but how much you do. Up to 40 hours a week, there are no negative effects on a husband's health. But the effects are substantial after 40 hours, say, more than 50 hours a week.

Everyone should be responsible for his or her own health, but I think what this survey shows is how much more dependent husbands are on their wives than wives are on their husbands (when it comes to) health issues. This difference is pretty well established in gender roles.

But the major mechanism is really arranging constructive social contacts.