Why Zebras Don't Get Ulcers is the go-to reference on stress biology for authors across psychology, parenting, and relationships. Amir Levine and Rachel Heller cite Sapolsky's primate research in Attached to argue that the human need for a secure base is biologically wired, while Sue Johnson draws on his stress physiology to explain why partner disconnection triggers full-body threat responses. Paul Tough quotes Sapolsky's insight that humans uniquely activate emergency stress responses chronically rather than acutely, using it to explain how toxic stress damages children's developing brains.
Mark Wolynn uses Sapolsky's glucocorticoid research to ground the epigenetic inheritance of trauma in measurable physiology. Readers praise the book's rare combination of rigorous science and genuinely funny writing, though some find the later chapters on coping strategies thinner than the biological explanations. It is consistently recommended as the single best book for understanding what stress actually does to the body and why modern life makes it worse.