{"id":31459,"date":"2026-10-23T18:36:47","date_gmt":"2026-10-23T18:36:47","guid":{"rendered":"https:\/\/kriyasya.com\/pulse\/stress-the-brain-and-the-nervous-system-polyvagal-allostatic-guide\/"},"modified":"2026-10-23T18:36:47","modified_gmt":"2026-10-23T18:36:47","slug":"stress-the-brain-and-the-nervous-system-polyvagal-allostatic-guide","status":"publish","type":"post","link":"https:\/\/kriyasya.com\/pulse\/stress-the-brain-and-the-nervous-system-polyvagal-allostatic-guide\/","title":{"rendered":"Stress, the Brain and the Nervous System: McEwen’s Allostatic Load, HPA Axis, and Polyvagal Autonomic Science"},"content":{"rendered":"

Chronic stress is frequently described in vague colloquialisms, leaving individuals bewildered as to why psychological strain produces tangible physical pathologies: chronic gastrointestinal distress, tension headaches, insomnia, and palpitations. Grounded in Hans Selye’s General Adaptation Syndrome, Bruce McEwen’s Allostatic Load model, and Stephen Porges’s Polyvagal Theory, stress is an evolutionary survival program governed by the hypothalamic-pituitary-adrenal (HPA) axis and the autonomic nervous system. The Stress, the Brain and the Nervous System Psychoeducation Module<\/strong> provides a 13-lesson neurobiological foundation to understand how stress hormones alter brain architecture and how to activate parasympathetic restoration.<\/p>\n