Interesting work was recently published (earlier as electronic version) on the effects of marital history on, especially, men’s (50< age < 75) mortality:

Marital history 1971-91 and mortality 1991-2004 in England, Wales and Finland

In a nutshell, married men with no divorce history live longer.

Authors include top  notch Finnish scientists as well as renowned British demographer, Emily Grundy.