The researchers followed 724 men, conducting questionnaires every two years, interviews at different intervals and collecting health information every five years. They looked at everything from their personalities, to drinking habits, and even skull shape and size.
What did make all the difference were the men’s relationships with others.
“Our men found that good, close relationships predicted not only that they would stay happier, but that they would stay physically healthier,”
Source: CBS News May 27, 2016, 5:26 PM What makes a happy, healthy life?