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How can we trust strangers when friends keep breaking our trust again and again? A 2021 survey by the American Enterprise Institute found that the number of Americans who say they have no close friends has quadrupled since 1990, going from 3% to 12%. Having friends is important, however. Research by Brigham Young University psychologist Julianne Holt-Lunstad has shown that loneliness is a major threat to longevity. The threat from loneliness is equal to that from smoking 15 cigarettes a day...
