Life expectancy and active life expectancy by marital status among older U.S. adults: Results from the U.S. Medicare Health Outcome Survey (HOS)

This large-scale Medicare study analyzed U.S. adults aged 65+ and found that married individuals live longer and have more active years than unmarried ones. Married men and women had 2+ years greater total and active life expectancy compared to their unmarried counterparts. However, the longevity advantage diminished with age and was partly explained by selection bias.

Here’s the link to the full study.