Healing Before the Procedure Begins
Your nervous system doesn't know the difference between a surgery that saves your life and a threat to your survival. What Somatic Experiencing offers, before, during, and after medical procedures, is the possibility of real preparation: not just information, but a regulated body that can move through the experience and come out the other side.
If you've ever felt inexplicably flooded with anxiety in a hospital waiting room, frozen when a nurse reaches for your arm, or found yourself replaying a procedure over and over weeks later, you are not overreacting. You are experiencing what your nervous system was designed to do when it perceives a threat. A medical setting, with its loss of control, unfamiliar sensations, and often genuine danger, can be one of the most activating environments a human being can enter.
Medical trauma is far more common than most people realize and far more treatable than most people have been told.
1 in 5 adult ICU survivors develop PTSD symptoms lasting 12+ months after discharge
50% of surgical patients globally report significant pre-operative anxiety
4.3× higher likelihood of PTSD symptoms in ICU-admitted vs. non-ICU surgical patients
90% of SE participants maintained symptom improvement at one-year follow-up (Brom et al., 2017)
What is medical trauma, exactly?
Medical trauma isn't limited to dramatic emergencies. It can arise from a diagnosis delivered bluntly, from being immobilized during a scan, from waking during a procedure, or even from the cumulative experience of being poked, prodded, and talked over as if you were a body rather than a person inside one.
At its core, medical trauma is what happens when an experience overwhelms the nervous system's capacity to process and integrate — when fight and flight are not options, and the body freezes instead. As Somatic Experiencing® founder Peter Levine observed by studying the animal kingdom, the freeze response is an ancient survival mechanism. The problem isn't that it activates. The problem is when it never resolves.
"Post-traumatic stress symptoms are considered an expression of stress activation and an incomplete defensive reaction to a traumatic event — not a character flaw, and not a permanent condition."
— Brom et al., Journal of Traumatic Stress, 2017
Research consistently finds that ICU survivors carry this unresolved activation long after discharge. A 2025 study found a 25% prevalence of PTSD in ICU survivors six months post-discharge, with significantly higher rates of disability and depressive symptoms in those who developed PTSD compared to those who did not. A large meta-analysis found the overall prevalence of PTSD symptoms in critical care survivors to be nearly 20%, with rates remaining elevated even beyond 12 months.
These are not rare edge cases. These are your neighbors, your family members — people who went to the hospital to get better and left carrying something invisible they couldn't name.
The physiological case for nervous system preparation
What stress does to the body before surgery
The research in psychoneuroimmunology is unambiguous: psychological stress before a medical procedure doesn't just feel bad — it actively creates conditions that compromise the body's ability to heal. Pre-operative stress triggers the release of cortisol and adrenaline, which suppress immune function, increase inflammation, slow wound healing, and raise intraoperative risks such as elevated blood pressure and anesthetic complications.
A systematic review published in Frontiers in Psychology confirmed that high cortisol levels and immune system dysfunction were measurable in oncology patients the day before surgery — before a single incision had been made. The stress of anticipation was already interfering with the body's healing capacity.
Put simply: arriving dysregulated means your body is working against itself from the moment you walk through the door.
Pre-operative psychological interventions and surgical outcomes
A comprehensive systematic review spanning studies from 2000–2022 found that psychological interventions, including relaxation techniques and mindfulness-based interventions, produced measurable reductions in cortisol, anxiety, and post-operative pain. Relaxation therapy in bariatric surgery patients produced significant reductions in both cortisol levels and anxiety symptoms. Patients who entered surgery in a psychologically regulated state consistently experienced smoother recoveries.
Benefit: reduced cortisol, less post-op pain, faster recovery
Why SE goes deeper than relaxation alone
Relaxation techniques such as breathing exercises, guided imagery, and progressive muscle relaxation are genuinely helpful. But they primarily work at the cognitive and voluntary nervous system level. They help you feel calmer in your thinking mind. Somatic Experiencing works at a different depth entirely.
SE targets what researchers call the Core Response Network (CRN): the subcortical and limbic pathways, the autonomic nervous system (ANS), the hypothalamic-pituitary-adrenal axis, and the reticular activating system. These are the structures that actually hold traumatic activation — structures that don't respond to reassurance or to knowing better, but do respond to titrated, bottom-up, body-level interventions.
SE is not primarily an exposure therapy. It works by supporting the re-establishment of the nervous system's innate regulatory capacity through interoception, self-protection, emotion regulation, and self-awareness. The goal is not to process the trauma; it's to complete what was left incomplete, allowing the body to finally stand down from a threat that passed long ago.
What the evidence shows
Randomized Controlled Trial · 2017
Brom et al. — The landmark SE efficacy study
The first known randomized controlled trial of SE enrolled 63 participants meeting full PTSD criteria. The 15-session SE protocol produced large effect sizes for both PTSD symptom severity (Cohen's d = 0.94–1.26) and depression (Cohen's d = 0.70–1.08). At one-year follow-up, 90% of tracked participants maintained their improvements — a remarkable durability finding that distinguishes SE from treatments requiring ongoing reinforcement.
Effect size: d = 0.94–1.26 for PTSD symptoms
Cancer & Medical Trauma · 2023
Vagnini, Grassi & Saita — SE with breast cancer survivors
This pioneering 2023 study from Milan's Università Cattolica del Sacro Cuore was the first to investigate SE specifically with breast cancer survivors — women who had undergone mastectomy or quadrantectomy and were living with the aftermath. After just eight weeks of group SE sessions, participants showed statistically significant decreases in anxiety, depression, and distress (p < 0.05), and significant reduction in anxious preoccupation as a coping strategy (p < 0.001), alongside improvements in forward-focused coping and body image.
Significant reductions in anxiety, depression & distress after 8 weeks
Nervous System Regulation · Frontiers in Neuroscience
SE and the autonomic nervous system — the mechanism
Research published in Frontiers in Neuroscience confirmed that SE is designed specifically to address autonomic nervous system dysregulation and its associated physical and mental health symptoms — including anxiety, depression, PTSD, migraines, fibromyalgia, and chronic fatigue. Participants in a 3-year SE training showed significant improvements in quality of life and reductions in anxiety and somatic symptoms. The authors note that these findings have implications for any profession exposed to repeated stress and overwhelm — including medical patients navigating complex treatment pathways.
How SE preparation changes the experience of medical procedures
When a client comes to see me before a scheduled surgery, biopsy, or ongoing treatment, we're not doing talk therapy. We're not rehearsing what to say to the doctor or building a coping plan (though those things have their place). We are working with the body's actual felt sense of what's coming — with the tightening in the chest when the appointment date gets close, the strange blankness that descends when you try to picture yourself in the hospital gown, the places in the body that have gone quiet in a way that doesn't feel like peace.
SE preparation for medical procedures typically involves:
Titration of the approach: gently orienting toward the anticipated experience in small, tolerable doses rather than forcing a full confrontation
Resourcing: identifying and strengthening felt-sense experiences of support, safety, and capacity that can be accessed during the procedure
Completing previous medical trauma: when past procedures have left residue in the body, gently moving through that incomplete response before adding new experience on top
Establishing a window of tolerance: so the nervous system can track sensation during the procedure without collapsing into overwhelm or dissociation
Post-procedure integration: allowing the nervous system time and support to register that the threat has passed — the step most conventional care skips entirely
The body that arrives regulated heals differently than the body that arrives braced. This isn't metaphor, it's physiology. And SE is one of the most precise tools we have for doing this work.
"There is robust evidence from psychoneuroimmunology that psychological stress can slow wound healing and increase susceptibility to infection. Patients who are highly distressed pre-operatively may have higher intraoperative cortisol levels and blood pressure, which can complicate anaesthetic management."
— Delta Psychology Clinical Review, 2025
Who this work is for
You don't have to have a PTSD diagnosis to benefit from SE preparation around medical procedures. You might simply be someone who:
Notices they go strangely numb or anxious when receiving medical care
Has a history of difficult medical experiences that haven't fully resolved
Is facing a diagnosis, surgery, or treatment course and wants to arrive as whole as possible
Feels their body "acting up" around appointments — sleep disturbances, GI upset, hypervigilance — in ways that feel disproportionate
Is a caregiver supporting someone through medical treatment and finding the stress accumulating in your own body
The nervous system doesn't distinguish between your trauma and a loved one's. Research confirms that family members of ICU patients show significant rates of PTSD symptoms in the months following discharge — another often-invisible population for whom SE can offer meaningful relief.
A note on the research landscape
The body of SE research has grown meaningfully in recent years, and the findings are consistently encouraging. The field acknowledges that larger and more diverse randomized controlled trials are needed. This is true of most somatic and body-based therapies, which have historically been underfunded relative to pharmaceutical and cognitive-behavioral approaches. What exists is promising: large effect sizes, durable outcomes, and a theoretical framework grounded in neuroscience that is increasingly well-supported by the broader trauma literature.
As a practitioner, I hold the existing evidence alongside what I witness in the room: bodies that were braced learning to soften, nervous systems that had been on alert for years finding their way back to regulation, people who were certain they were "just anxious" discovering that their bodies had been carrying something real and releasable.
That is the work. And there is good reason to believe it matters.
References & further reading
Brom, D., Stokar, Y., Lawi, C., Nuriel-Porat, V., Ziv, Y., Lerner, K., & Ross, G. (2017). Somatic Experiencing for Posttraumatic Stress Disorder: A Randomized Controlled Outcome Study. Journal of Traumatic Stress, 30(3), 304–312. https://doi.org/10.1002/jts.22189
Vagnini, D., Grassi, M. M., & Saita, E. (2023). Evaluating Somatic Experiencing® to Heal Cancer Trauma: First Evidence with Breast Cancer Survivors. International Journal of Environmental Research and Public Health, 20(14), 6412. https://doi.org/10.3390/ijerph20146412
Winblad, N. E., et al. (2018). Effect of Somatic Experiencing Resiliency-Based Trauma Treatment Training on Quality of Life and Psychological Health as Potential Markers of Resilience in Treating Professionals. Frontiers in Neuroscience. https://doi.org/10.3389/fnins.2018.00070
Payne, P., Levine, P. A., & Crane-Godreau, M. A. (2015). Somatic Experiencing: Using interoception and proprioception as core elements of trauma therapy. Frontiers in Psychology, 6, 93. https://doi.org/10.3389/fpsyg.2015.00093
Meta-analysis: Prevalence of PTSD symptoms in adult critical care survivors. Critical Care. https://doi.org/10.1186/s13054-019-2481-x
Post-Traumatic Stress Disorder in ICU Survivors: Correlations with Long-Term Psychiatric and Physical Outcomes. International Journal of Environmental Research and Public Health, 22(3), 405. (2025)
Baron, Y., et al. (2022). The Effect of Pre-operative Psychological Interventions on Psychological, Physiological, and Immunological Indices in Oncology Patients: A Scoping Review. Frontiers in Psychology. https://doi.org/10.3389/fpsyg.2022.839065
The influence of psychological interventions on surgical outcomes: A systematic review. PMC10245433 (2023)
Somatic Experiencing® International. SE 101 — What is Somatic Experiencing? https://traumahealing.org/se-101/