How a Spouses Age Influences Life Expectancy
In a study done at the Max Planck Institute for Demographic Research, researchers found that men who had spouses who were five to seven years younger than them reduced their risk of dying by around eleven percent. Unfortunately, women with younger husbands didnt seem to benefit from a greater life expectancy. In fact, women who married men seven more years younger than they were increased their risk of mortality by twenty percent.
Why is a spouses age important when it comes to longevity? Researchers used to think that marrying a younger woman increases life expectancy because of a phenomenon called health selection. This means that men who are healthier and more vital for their age are better able to attract and marry a younger woman - and would have had a greater life expectancy anyway. But, researchers at the Max Planck Institute no longer think this is the major factor. They arent completely sure why a spouses age affects longevity.
Could it be psychological? Its possible that when a man has a younger wife, he gets a mental boost that keeps him happy and healthy. A man with a younger wife also benefits from having someone who can take care of him when hes ill and to help nurse him back to health.
Older Women with Younger Men: Reduced Life Expectancy?
Why do women who marry younger men have a shorter life expectancy? One hypothesis is that women marrying younger men goes against societal expectations which may mean the couple has fewer friends and social contacts which could indirectly increase the risk for health problems. In this study, any large discrepancy in age between husband and wife, reduced the wifes life expectancy - whether the man was younger or older.
The Bottom Line
On the positive side, marriage, in general, is good for health regardless of a spouses age. According to most studies, both married men and women live longer lives than people who are single. So, choose your spouse wisely - irrespective of age.
References:
http://www.demogr.mpg.de/en/press/1813.htm