Not something everyone would have thought — especially those who refer to their wife as their “ball and chain” — but married men do live longer.

But it also depends on the age at which they get married.

A survey of more than 127,000 Americans found men who got married after they were 25 were likely to live longer than those who married young.

Researchers have questioned whether healthy men are more likely to marry than men with health problems, but unhealthy men actually marry earlier, are less likely to divorce, and are more likely to remarry after divorce or being widowed than healthy men.

Others have wondered whether living with another person has health benefits.

But it seems to be both.