Big Think

How loneliness is killing us, according to a Harvard professor | Robert Waldinger

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Aug 21, 2025
Join Robert Waldinger, a Harvard psychiatry professor and Zen priest, as he delves into the alarming loneliness epidemic affecting 60% of people today. He reveals that loneliness can be as harmful as smoking half a pack of cigarettes daily, impacting both mental and physical health. Drawing on key research, Waldinger shares practical tips for fostering connections, suggesting that even small interactions with neighbors or cashiers can combat feelings of isolation. Discover how meaningful relationships can transform our well-being and reinforce our sense of belonging.
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INSIGHT

Loneliness Is A Growing Epidemic

  • Loneliness is a widespread epidemic that has been growing for decades.
  • Between 30% and 60% of people report feeling lonely much of the time.
INSIGHT

Loneliness Is Subjective

  • Loneliness is subjective and distinct from isolation.
  • You can feel lonely in a crowd or in a marriage, and you can feel fine alone on a mountaintop.
INSIGHT

Who Feels Loneliest

  • Young adults (16–24) and older adults show higher loneliness rates at different life stages.
  • Loneliness affects all ages, incomes, and demographics worldwide.
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