How does trauma live in the body?

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Accepted Answer

Trauma lives in the body as chronic patterns of muscular tension, altered nervous system baseline, dysregulated stress hormone cascades, disrupted interoception, and incomplete survival responses that were never physiologically discharged. Dr. Bessel van der Kolk's research and clinical work documented that the body records threatening experiences independently of narrative memory, and that healing requires addressing these somatic records directly. The phrase "the body keeps the score" describes the mechanism by which trauma is encoded not only in explicit memory but in the body's regulatory systems. Dr. Bessel van der Kolk at the Trauma Research Foundation has documented through neuroimaging, physiological measures, and clinical observation that traumatic experiences alter the nervous system's baseline in measurable ways: the HPA axis is dysregulated, cortisol rhythms are disturbed, startle responses are amplified, and the body maintains a state of chronic low-level threat readiness. Somatic markers of trauma include: areas of chronic muscular tension that do not resolve through rest (the held quality in the shoulders, the chronic jaw clenching, the perpetually guarded belly), altered breathing patterns (shallow, high-chest breathing that maintains sympathetic activation), proprioceptive disturbances (feeling disconnected from or alienated from the body), and disrupted interoception (difficulty accurately reading bodily signals of hunger, fatigue, or emotion). Dr. Antonio Damasio at the University of Southern California has documented through his research on "somatic markers" how the body's physiological signals are integral to decision-making, emotional experience, and the construction of the self. Trauma disrupts this system: when the body's signals are consistently associated with threat, the person may learn to discount or override them, producing the dissociation from bodily experience that is among the most common sequelae of chronic trauma. Body-based healing approaches, including Somatic Experiencing, Sensorimotor Psychotherapy, yoga adapted for trauma, and mindful movement, work at the level where trauma is stored: in the physiological patterns of the body rather than solely in the narrative constructions of the mind. Dr. Bessel van der Kolk's research has consistently supported these approaches, including a landmark study showing yoga to be more effective than pharmaceutical treatment for PTSD in certain populations.