Traumatic experiences can produce persistent changes extending beyond psychological distress to involvedisruption to autonomic regulation, hypothalamic-pituitary-adrenal (HPA) axis signaling, inflammatory pathways, sleep, cardiovascular function, gastrointestinal physiology, pain processing, and epigenetic regulation. Posttraumatic stress disorder (PTSD) is increasingly understood as a multisystem disorder in which physiological responses originally designed to promote survival may remain dysregulated long after the immediate threat has resolved. Grounding, or earthing, refers to conductive contact between the human body and the Earth, either through direct skin contact to natural earth surfaces outside or through conductive grounding systems that are connected to the Earth through conductive wiring. Preliminary clinical and physiological studies suggest that grounding may influence several processes relevant to trauma physiology, including autonomic regulation and heart rate variability (HRV), vagal tone, sleep, cortisol rhythmicity, inflammatory activity, blood rheology, pain, and mood. No clinical trials have investigated grounding as a treatment for PTSD or demonstrated reversal of trauma-associated neural or epigenetic alterations directly, as of yet. Nevertheless, the overlap between physiological abnormalities described in trauma-related disorders and the physiological health improvements examined in grounding studies provides a rationale for systematic investigation. This narrative review examines trauma as a persistent brain-body physiological state, reviews the available grounding literature, proposes potential mechanisms through which grounding might complement established trauma therapies, and identifies priorities for future clinical research. Grounding should currently be regarded as a powerful potential adjunctive treatment rather than a replacement for evidence-based trauma treatment.