Happily Marrieds Have Lower Blood Pressure Than Social Singles

Happily married adults have lower blood pressure than singles with supportive social networks. Both men and women in happy marriages scored four points lower on 24-hour blood pressure than single adults. Having supportive friends did not translate into improved blood pressure for singles or unhappily marrieds.

New research shows that happily married adults have lower blood pressure than singles with supportive social networks, suggesting marriage may literally be a matter of the heart.

A University professor Julianne Holt-Lunstad found that men and women in happy marriages scored four points lower on 24-hour blood pressure than single adults. Having a network of supportive friends did not translate into improved blood pressure for singles or unhappily marrieds, which surprised Holt-Lunstad and her two student collaborators.

The study also found, unsurprisingly, that unhappily married adults have higher blood pressure than both happily married and single adults.

Holt-Lunstad, a psychologist who studies relationships and health, arranged for 204 married and 99 single adults to wear portable blood pressure monitors, mostly concealed by their clothes, for 24 hours.
The monitors recorded blood pressure at random intervals throughout the day – even while participants slept. Each participant’s blood pressure level was recorded about 72 times.

All participants completed a roster of friends in their social network and answered questions about the quality of those relationships. Married participants also completed questionnaires on the quality of the relationship with their spouses.

With the monitors recording blood pressure both day and night, the researchers could see that blood pressure for married adults – especially those happily married – dipped more during sleep than happens with singles.

The research has shown that people whose blood pressure remains high throughout the night are at much greater risk of cardiovascular problems than people whose blood pressure dips. Holt-Lunstad said that spouses can promote healthy habits, such as encouraging each other to see a doctor and to eat healthy. The marriage relationship is also a source of emotional support in good and bad times. Sharing good news, for example, generates positive emotions, which in turn boosts the body’s functioning.