Bessel van der Kolk's book, The Body Keeps the Score, really shook up how we think about trauma. It proposed a radical idea: that trauma isn't just something we process in our thoughts; it gets physically stored in our bodies, affecting our biology and our very way of being. For many people, this concept felt like a breakthrough, offering a language for experiences that felt unspeakable. But as research has continued, the conversation around the book's claims has become richer, more nuanced, and sometimes, a little bit messy.
How does trauma actually get stored in the body, according to the research?
At its heart, van der Kolk's argument challenges the traditional view that psychological problems are purely mental events. He suggests that when a person experiences overwhelming trauma, the brain's alarm system - the fight, flight, or freeze response - gets stuck in the "on" position. This isn't a failure of willpower; it's a biological hijacking. The body remembers what the conscious mind might forget or repress. Early work, like van der Kolk's 1994 paper in the Harvard Review of Psychiatry, laid groundwork suggesting that memory isn't just a file cabinet; it's a complex process involving emotion and physical sensation. If the memory is too intense or too scary to process rationally, the body takes over the storage mechanism. This is where the body keeps the score - it holds the physiological residue of the event.
The concept has been debated and refined since. For instance, some researchers have focused on how trauma impacts the nervous system itself. Wiśniewska (2016) (preliminary) reviewed van der Kolk's work, noting its importance in shifting focus toward the body's role in healing. This kind of review helps solidify the core message while also pointing out areas where more specific, measurable research is needed. The idea isn't just that the body reacts to trauma; it's that the body becomes part of the trauma narrative. This means that symptoms like chronic pain, digestive issues, or hypervigilance aren't just coincidences; they are potential physical manifestations of unresolved psychological stress.
More recent reviews have kept this focus on the integration of mind and body. Macaskill-Webb (2020) discussed the book's impact, emphasizing that healing requires engaging the whole person - the thoughts, the feelings, and the physical self. This moves treatment away from just "talking through" the event and toward embodied practices. When we talk about the body keeping the score, we are essentially saying that the nervous system needs to learn that it is safe now, even if the original event was terrifying. The body needs to practice safety in the present moment.
The literature also points to the necessity of understanding the developmental aspect. The way a person learns to regulate emotions and process danger in childhood profoundly shapes how they react to trauma later in life. The ongoing discussion, as seen in reviews like Gill (2024) (review) in the Journal of Human Lactation, shows that even seemingly unrelated fields - like lactation - are being viewed through this trauma-informed lens, suggesting the theory has permeated mainstream understanding. While the initial impact was massive, the current research trajectory is moving toward specifying which biological pathways are most affected and how specific therapies can safely retrain those pathways. It's a shift from "trauma affects the body" to "here is how the body's alarm system can be gently retrained to recognize safety again."
What are the current therapeutic implications and gaps in the literature?
The sheer breadth of the book's claims has generated a lot of discussion about what constitutes "effective" treatment. If the body is the primary archive of trauma, then therapies that only target cognitive restructuring - like simply talking oneself out of the fear - might miss the mark. This is a key area of debate. The literature suggests that effective treatment must be multi-modal, meaning it needs to engage several parts of the person simultaneously. This is why approaches incorporating somatic experiencing, yoga, or play therapy are frequently mentioned in the context of this research.
The concept of "healing" itself is being redefined. It's not about erasing the memory; it's about changing the relationship to the memory. Daly (2015) (preliminary) touches on the depth of this material, suggesting that the process is long and requires patience. The body needs time and repeated, safe experiences to build new neural pathways that contradict the old, traumatic programming. This is where the scientific rigor is needed - to move from compelling narrative to measurable outcomes. For example, while the theory is powerful, researchers are continually looking for objective measures, perhaps using heart rate variability or cortisol levels, to track the physiological shift from chronic alarm to regulated calm.
Furthermore, the literature highlights the importance of context. A review by Wiśniewska (2016) (preliminary) implicitly reminds us that the concept must be applied carefully. Not every distress signal is trauma-related, and not every trauma response can be fixed with a single intervention. The research is maturing into a sophisticated framework that respects the complexity of human biology. It's less about a single cure and more about building a thorough map of the self that includes the physical self. The goal, as suggested by the ongoing scholarly conversation, is to help people with knowledge about their own biology, allowing them to become their own most informed advocates for healing.
Practical Application: Integrating Somatic Awareness
The core takeaway from understanding how trauma impacts the body is that talk therapy alone is often insufficient. The nervous system needs to be retrained through embodied experience. One highly recommended, evidence-informed protocol for beginning to process stored trauma is a modified Polyvagal-informed Somatic Experiencing approach. This is not a replacement for professional therapy, but rather a set of techniques to practice with a skilled guide.
The Grounding and Titration Protocol
This protocol focuses on gently bringing the client into a state of "felt safety" while allowing small, manageable doses (titration) of activation energy to move through the body, rather than overwhelming the system. Consistency and slow pacing are paramount.
- Phase 1: Establishing Baseline Safety (Daily, 10 minutes): Begin each session by focusing intensely on the physical sensations of safety. This might involve noticing the weight of the chair on your hips, the texture of your clothing, or the steady rhythm of your breath against your ribs. The goal is to anchor the client in the present, non-threatening moment. Practice 5-minute deep diaphragmatic breathing, ensuring the exhale is noticeably longer than the inhale (e.g., Inhale for a count of 4, Exhale for a count of 6).
- Phase 2: Gentle Pendulation (3 times per week, 30-45 minutes): This is the core work. The therapist guides the client to notice a sensation that is slightly uncomfortable or activating (e.g., a tightness in the chest, a buzzing in the limbs). Instead of dwelling on the discomfort, the client is guided to "pendulate" attention back to a resource - a place of calm, warmth, or ease in the body. The cycle is: Notice activation (e.g., tightness) $\rightarrow$ Notice resource (e.g., openness in the gut) $\rightarrow$ Return to resource. The duration of focusing on the activation should never exceed 30 seconds before returning to the resource, keeping the activation "small enough to manage."
- Phase 3: Completion and Integration (Weekly, 60 minutes): As the client becomes more regulated, the therapist may guide them through imaginal narratives or body scanning that allows for the completion of thwarted fight/flight responses. This might involve visualizing the energy needed to defend oneself in a past scenario, but crucially, allowing the body to complete the physical "discharge" (e.g., shaking, tensing, releasing) in the present, safe room. This phase requires the highest level of attuned support.
The key timing element is the frequency of practice: daily micro-doses of grounding are more effective than infrequent, intense sessions. The duration must be dictated by the client's window of tolerance, never pushed past the point of overwhelm.
What Remains Uncertain
While the model of the body keeping the score is profoundly useful for reframing symptoms, it is crucial to acknowledge what the current understanding does not fully account for. Firstly, the concept of "completion" of trauma responses remains highly debated. While discharge techniques are helpful, the biological mechanism by which the nervous system fully processes and archives these energetic residues is not fully mapped. We are making educated inferences based on observable physiological shifts, but the neurochemistry of resolution is still emerging.
Secondly, the influence of cultural context on somatic expression is vastly under-researched. What manifests as "somatic tension" in one culture might be expressed through different physical modalities or even be culturally normalized. A purely bio-medical approach risks pathologizing culturally adaptive responses. Furthermore, the role of genetics and epigenetics in modulating trauma response - how trauma changes gene expression across generations - is a frontier that requires much more integrated research combining psychology, genetics, and neuroscience. Finally, the variability in individual trauma histories means that a single "protocol" is inherently reductive. What works for one person's complex PTSD may be entirely inappropriate or even destabilizing for another whose primary dysregulation stems from chronic attachment injury rather than acute threat exposure. Therefore, the practitioner must remain perpetually skeptical of universal protocols.
Core claims are supported by peer-reviewed research. Some practical applications extend beyond direct findings.
References
- Gill S (2024). Book Review: A Review of: The Body Keeps the Score: Brain, Mind, and Body in the Healing of Trauma b. Journal of Human Lactation. DOI
- Wiśniewska L (2016). Bessel van der Kolk, The body keeps the score. Brain, mind and body in the healing of trauma, New Yo. Acta Universitatis Nicolai Copernici Pedagogika. DOI
- Daly S (2015). The Body Keeps the Score van der Kolk Bessel The Body Keeps the Score 443pp £25 Penguin 978024100398. Emergency Nurse. DOI
- Macaskill-Webb P (2020). The Body Keeps the Score: Brain, Mind, and Body in the Healing of Trauma by Bessel van der Kolk. New Zealand Medical Student Journal. DOI
- (2015). The Body Keeps the Score: Brain, Mind and Body in the Healing of Trauma, by Bessel A. van der. Journal of Sandplay Therapy. DOI
- van der Kolk B (1994). The Body Keeps the Score: Memory and the Evolving Psychobiology of Posttraumatic Stress. Harvard Review of Psychiatry. DOI