The Body Keeps the Score got the problem right. The guidelines disagree about the solution.

The book is right that trauma lives in the body, and that insight changed how a lot of people are treated. What follows from it is where the evidence gets awkward: the treatments with the strongest support are the ones it is most sceptical of, and the reason why is more interesting than either side admits.

The Body Keeps the Score has sold millions of copies and spent years on the bestseller lists, which makes it probably the most widely read book about mental health of the last decade. Its central claim is one sentence long, and it is largely right.

The claim: trauma is not only a memory of something that happened. It is a lasting change in the body and the nervous system, which is why people cannot reason their way out of it, and why a person can describe what happened to them calmly and accurately while their body behaves as though it is happening now.

That is worth saying plainly because the rest of this post is about where the evidence and the book part company, and the parting is narrower than it will sound.

What it got right

The physiological signature of trauma is real and measurable. Startle responses, autonomic reactivity, disrupted sleep, altered interoception. None of that is in dispute.

The clinical point that follows was overdue. Telling someone whose body is in a threat state to think differently about the event misreads the problem. A generation of clinicians took that seriously partly because of this book, and it improved how a lot of people are treated.

And there is a quieter contribution that is hard to measure and easy to dismiss. A very large number of people read it and understood for the first time that what was wrong with them had a shape and a name. That is not a clinical outcome, but it is not nothing either.

Where the guidelines part company

The book's implied prescription is that because trauma lives in the body, the way out runs through the body, and that talk-based therapy is insufficient for it.

The treatment guidelines say something different. The UK's National Institute for Health and Care Excellence, which sets NHS treatment standards, recommends that adults presenting more than a month after a trauma be offered individual trauma-focused cognitive behavioural therapy, naming cognitive processing therapy, cognitive therapy for PTSD, narrative exposure therapy and prolonged exposure therapy, typically over 8 to 12 sessions. EMDR is recommended as well, for adults presenting more than three months after a non-combat trauma. Medication is not first line.

So the treatments with the strongest evidence behind them are, broadly, the ones the book is most sceptical of.

The caricature is doing a lot of work

Before that lands as a verdict, it is worth being precise about what trauma-focused CBT actually involves, because "talk therapy" makes it sound like discussing your feelings until they resolve.

It is not that. Prolonged exposure means going back into the memory deliberately and repeatedly, out loud, and staying with it. Narrative exposure means constructing the account in detail rather than around the edges. These protocols are built around sustained contact with exactly the material the body reacts to. They are far closer to what the book is asking for than the phrase "talk therapy" suggests, and some of the apparent disagreement is a disagreement about labels.

The yoga trial, which he ran himself

The book's positive proposal has been tested, and by its own author, which is worth knowing without treating it as disqualifying.

The 2014 trial randomised 64 women with chronic, treatment-resistant PTSD to ten weekly hour-long classes of trauma-informed yoga or to a supportive women's health education class. Sixty completed it. By the end, 52% of the yoga group no longer met criteria for PTSD, against 21% of the control group, and that difference was significant.

Two honest notes on it. The comparator was an active one rather than a waiting list, which makes it a harder test and a better trial than most in this area. But the between-group effect size on the clinician-administered scale was 0.41, which is modest, and much less dramatic than the gap between 52% and 21% makes it sound. Both groups improved substantially.

A decade of further trials has not resolved it so much as complicated it. A 2024 meta-analysis of 20 randomised trials and 954 people found that yoga improved self-reported PTSD symptoms, and that the same trials showed no improvement on clinician-rated symptoms.

That split is the most interesting finding in this whole area and nobody has a clean explanation for it. It could mean the clinician scales miss something real that people can feel. It could mean expectancy is doing the work, which is what you would expect when participants know perfectly well which group they are in. Both readings are live.

EMDR, which is in the book and in the guidelines

EMDR is recommended by NICE, and it works. It is also the clearest case of the book's instinct being half right.

The distinctive ingredient, the bilateral eye movements, may not be doing anything. Dismantling trials compare full EMDR against the identical procedure with the eye movements removed. A systematic review pooling ten of them found a Hedges g of -0.04, with a confidence interval from -0.24 to 0.17. That interval is centred on nothing.

This is not a debunking of EMDR. EMDR helps people. It is a hint about why, and the likeliest answer is that what works about it is the part it shares with exposure therapy: going back into the memory, in a structured way, repeatedly, with someone, while nothing bad happens.

What the effective versions have in common

Line them up and the pattern is hard to miss. Prolonged exposure, cognitive processing therapy, narrative exposure, EMDR. Every one of them involves deliberate, repeated contact with the material, in a setting safe enough to stay in it. That is the same mechanism that runs anxiety treatment, where the active ingredient turns out to be staying rather than leaving.

Whether that contact happens sitting in a chair, tracking a finger, or in a yoga pose may matter less than whether it happens at all. If that is right, then the book and the guidelines are arguing about the delivery vehicle while agreeing about the engine.

What to do with the book

Read it. It is good at the thing it is good at, which is making the physiology legible and making people feel less broken. It is a bad treatment plan, and it was never really written as one.

If you have PTSD, the intervention with the best odds is a trauma-focused therapy delivered by somebody trained in it, over something like 8 to 12 sessions. Those are the words worth using when you ask for it: trauma-focused, and the name of a protocol. Body-based work is a reasonable thing to add, particularly if it is what keeps you in treatment at all, and a poor thing to substitute.

The caution is specific. A book that tells you the trauma is held in your body can be read as telling you that ordinary treatment cannot reach it. The evidence does not say that. It says the opposite, and more confidently than it says almost anything else in this field.

If you are in crisis right now, this is not the page you need. Contact your local emergency services or a crisis line.

This article is for general information and is not a substitute for professional care. If you are in crisis or thinking about harming yourself, please contact your local emergency services or a crisis line. See crisis lines.