Robert Sapolsky: Stress, Aging, and the Biology of Chronic Disease

Summary

Sapolsky, author of Why Zebras Don't Get Ulcers, explains why chronic psychological stress is uniquely damaging to human health — unlike the acute stress experienced by other animals. He covers the HPA axis, glucocorticoid toxicity, telomere shortening under stress, and why social hierarchy and perceived control are the strongest predictors of stress-related disease.

Key Takeaways

• 1

  Chronic stress (unlike acute stress) keeps cortisol elevated for days to weeks — damaging the hippocampus and immune system

• 2

  Epel et al. 2004: caregivers with highest perceived stress had telomeres equivalent to 10 additional years of aging

• 3

  Social rank and perceived control are the strongest predictors of stress-related disease — not the stressor itself

• 4

  Glucocorticoids (cortisol) suppress immune function, impair memory, and promote visceral fat accumulation

• 5

  The most effective stress interventions address perceived control and social connection, not just relaxation

Molecules Discussed

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