Does Having a Happy Spouse Lead to a Longer Life?

KEY POINTS
A person's spouse affects their life in many ways. Some characteristics in one's spouse are linked to higher income and health, studies show.
People aged 50 or older whose spouses report greater life satisfaction are more likely to be alive eight years later, according to research.
Happier people are more likely to have a healthy lifestyle, which may guide their partner to adopt that lifestyle and increase longevity.