Longevity Tip: Do You Know the Strongest Predictor of a Long Life?

Be conscientious. The strongest personality predictor of a long life is conscientiousness—that is, being prudent, persistent, and well organized, according to The Longevity Project, coauthored by Howard Friedman and Leslie Martin. The book describes a study that followed 1,500 children for eight decades, collecting exhaustive details about their personal histories, health, activities, beliefs, attitudes, and families. The children who were prudent and dependable lived the longest, Friedman says, likely because conscientious types are more inclined to follow doctors’ orders, take the right medicines at the right doses, and undergo routine checkups. They’re also likelier to report happier marriages and more satisfying work lives than their less conscientious peers.

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