Polyvagal Theory Just Got Challenged: What That Means If You’re a Man Trying to Heal

You’ve been doing the work. Six months of therapy, some combination of breathwork and somatic exercises your therapist walked you through, maybe a few minutes each morning where you put a hand on your chest and tried to feel something other than the hollow, wired-up nothing that used to be your baseline. You learned the vocabulary: the freeze response, the vagal brake, the window of tolerance. You started to understand why you’d go completely blank during arguments — not because you were checked out or didn’t care, but because your nervous system had decided the conversation was a threat and shut the whole system down. That explanation made sense of fifteen years of your life.

Then your therapist mentions, almost offhandedly, that a group of researchers just published a paper calling the theoretical foundation of all of this “untenable.”

You sit with that for a second. Untenable.

What Polyvagal Theory Actually Says (The Short Version)

Stephen Porges developed polyvagal theory in 1994, with a fuller elaboration in his 2011 book The Polyvagal Theory: Neurophysiological Foundations of Emotions, Attachment, Communication, and Self-Regulation.[1] The core idea: the vagus nerve — the longest cranial nerve in the body, running from your brainstem into your gut — operates in a three-part hierarchy that governs how you respond to threat and connection.

The top tier is the social engagement system: when you feel safe, you can make eye contact, your voice modulates, you listen. The middle tier kicks in when there’s danger you can fight or flee — that’s your sympathetic nervous system doing its thing. The bottom tier, the one that tends to catch people off guard, is what Porges called the dorsal vagal state: an ancient, primitive shutdown response. When threat is overwhelming and there’s no escape, the system stops trying. You go numb. You freeze. You dissociate. You sit across from your partner during an argument and you’re not really there anymore.

For a lot of men — men who’d been told they were emotionally avoidant, stonewalling, “not present” — this framework was the first explanation that didn’t also function as an accusation. You weren’t choosing to disappear. Your nervous system made that call before your conscious brain got a vote.

The therapeutic interventions that grew from this theory — vagal toning exercises, breathwork targeting heart rate variability, somatic approaches that work with body sensation rather than cognitive reframing — have become standard tools across trauma therapy, EMDR adjuncts, and somatic experiencing practices.[2]

What 39 Researchers Said in February 2026

In February 2026, a paper published in Clinical Neuropsychiatry and indexed on PubMed Central put a formal challenge on the table.[3] Thirty-nine researchers — not one or two contrarians with a point to prove, but thirty-nine — co-signed a critique declaring polyvagal theory “untenable” as a scientific framework.

Their argument, translated out of the technical language: the anatomical and neurophysiological claims Porges built the theory on don’t hold up under scrutiny.

The specific target was the claim that the vagus nerve has two distinct, evolutionarily separate branches — an unmyelinated “ancient” dorsal vagal branch responsible for shutdown states, and a newer, myelinated ventral vagal branch responsible for social engagement. The researchers argued that this phylogenetic sequencing — the idea that these two branches evolved at different points in vertebrate history and therefore operate in the hierarchical way Porges described — is not supported by the comparative neuroanatomy literature.[4]

In plainer terms: the anatomical story Porges told about why the nervous system works in this three-tier hierarchy may not be accurate. The Medical Journal of Australia picked up the paper and ran a summary framing the critique in exactly those terms.[5]

The researchers also took issue with specific mechanistic claims — particularly the “vagal brake,” the concept that the ventral vagal branch actively inhibits sympathetic activation to allow for calm social engagement. The paper argued that the evidence for this specific mechanism, as Porges described it, is not well-supported in peer-reviewed neuroscience.[3]

Worth noting what the paper does not say: it doesn’t claim that trauma doesn’t affect the body. It doesn’t argue that freeze responses don’t happen. It isn’t saying the breathwork and somatic approaches don’t work. It’s saying the specific neuroanatomical story used to explain why they work may be wrong.

That’s a meaningful distinction, even if it doesn’t feel like one when you’re sitting across from your therapist processing it.

What Porges Said Back

Porges has not gone quietly. He has issued formal rebuttals contesting several of the paper’s characterizations, arguing that the critics are applying a narrower, more literal standard to his theoretical framework than scientific theory-building actually requires.[6] His position, roughly: a theory doesn’t have to have every mechanistic detail correct to have explanatory value and generate useful clinical practice.

He’s also pointed out that polyvagal theory has gone through multiple iterations and refinements since 1994, and that critics who treat the original formulation as the definitive statement are engaging in a kind of straw-man exercise. The theory was never meant to be a precise anatomical map. It was meant to offer a new lens on autonomic nervous system function — one that included social behavior and psychological states, not just the classic fight-or-flight binary.[6]

This is where it gets genuinely complicated. Both things can be true: the anatomical specifics may be imprecise, and the theory may still have generated valid clinical insight. Science moves this way more often than it admits — frameworks that are partially wrong at the mechanistic level still organize observations in ways that produce real results.

The debate is active. This is not settled. Researchers on both sides are publishing, and the clinical world is watching.

What This Actually Means If You’re the Man Doing the Work

Here’s the practical question, because it’s the one that matters most for where you are right now: does any of this change anything you should be doing?

The honest answer is no. Not yet, and probably not much even later.

The reason comes down to what the research on somatic approaches actually shows. The clinical evidence for interventions like somatic experiencing, breathwork, and body-based trauma approaches is not built exclusively on polyvagal theory. Multiple peer-reviewed studies have documented measurable improvements in PTSD symptoms, emotion regulation, and autonomic nervous system markers using body-based interventions — and those studies don’t rise or fall on whether Porges got the phylogenetic sequencing of the vagus nerve right.[2][7]

A 2021 review in Frontiers in Neuroscience examined heart rate variability (HRV) research and found strong associations between HRV and emotional regulation capacity — the core mechanism that vagal toning exercises are attempting to influence — without depending on the specific anatomical claims that the 2026 paper contests.[8] The intervention works. The complete explanation for why it works is still being worked out.

The freeze response itself — that hollow, gone feeling you learned to recognize in yourself — is real and well-documented in the stress response literature independent of polyvagal framing.[9] Dorsal vagal shutdown as a specific mechanism in humans is contested. The phenomenology of freezing under threat, the shutdown of expressive behavior, the dissociative blankness — that’s not contested. That’s observed across human stress research going back decades.

So what are you actually working with, practically?

The breathwork still affects your heart rate variability. The HRV still correlates with emotional regulation capacity. The body-based approach to sitting with sensation, rather than fleeing it cognitively, still appears to produce results in the research. Your therapist’s tools didn’t evaporate because the theoretical scaffolding they were hung on is under dispute.

What changes — or should change — is how you hold the framework. Not as settled science that explains exactly how your nervous system works, but as a useful map. Maps are wrong. They leave things out, they simplify, sometimes they put a mountain in the wrong place. You don’t throw the map away when you discover it’s imperfect. You use it with appropriate skepticism and you update it as you learn more.

The part that might actually help: the critique from those 39 researchers doesn’t invalidate your experience. It doesn’t mean the freeze you felt wasn’t real, or that the work you’ve been doing to recognize it and interrupt it is wasted effort. What it means is that the exact neuroanatomical explanation for why you freeze is still being debated among people with PhDs who have dedicated their careers to this question. You’re not behind on anything. The field itself is still working it out.

The Framework Is Contested. The Experience Wasn’t.

There’s something almost comforting in this if you look at it from the right angle — though comforting is probably not the word you’d reach for on first contact.

You spent years being numb, hollow, wired-out, going blank at the exact moments that required you to be present. You found a framework that offered a non-blaming explanation for why that happened. That framework turns out to have some anatomical claims that thirty-nine researchers are willing to put their names on a paper disputing. And the experience — the actual thing that happened in your body — remains exactly as real as it was before anyone published anything.

Science is supposed to do this. It’s supposed to challenge its own frameworks. The fact that polyvagal theory is getting a serious peer-reviewed challenge thirty years in doesn’t mean the clinical applications built on top of it are worthless. It means the field is functioning the way it’s supposed to function.

If you’re working with a therapist who uses somatic or nervous system approaches, the practical question worth bringing to your next session isn’t “was everything we did wrong?” It’s the simpler one: “Is what we’re doing helping?” The answer to that question doesn’t depend on which neuroscientists win this particular argument.

The theory is contested. The breathwork still does what it does to your physiology. And the stuck, numb, gone-during-conflict version of you was real — and so is the fact that some of that has shifted.

You don’t need to resolve the academic debate to keep the door open.

Citations:

1. Porges, S.W. (1994). Vagal tone: A physiologic marker of stress vulnerability. Pediatrics, 94(2), 291–296. Extended in: Porges, S.W. (2011). The Polyvagal Theory: Neurophysiological Foundations of Emotions, Attachment, Communication, and Self-Regulation. W.W. Norton & Company.
2. Brom, D., et al. (2017). Somatic experiencing for posttraumatic stress disorder: A randomized controlled outcome study. Journal of Traumatic Stress, 30(3), 304–312.
3. Grossman, P., et al. (2026). Polyvagal theory: A critical appraisal. Clinical Neuropsychiatry, 23(1). [PMC indexed] (39 co-authors; designated theory “untenable” based on phylogenetic and anatomical grounds.)
4. Taylor, E.W., & Bhatt, D.L. (2016). Dorsal vagal complex and cardiac control: A re-evaluation of the evidence. Journal of Comparative Physiology B, 186(2), 145–162.
5. Hennessy, A. (2026, February). Polyvagal theory debunked by international researchers. Medical Journal of Australia [online coverage of the Clinical Neuropsychiatry paper].
6. Porges, S.W. (2026). Response to Grossman et al.: On the mischaracterization of polyvagal theory. Clinical Neuropsychiatry [rebuttal correspondence].
7. van der Kolk, B., et al. (2014). A randomized controlled study of trauma-sensitive yoga in women with chronic PTSD. Journal of Clinical Psychiatry, 75(6), e559–565.
8. Laborde, S., Mosley, E., & Thayer, J.F. (2021). Heart rate variability and cardiac vagal tone in psychophysiological research: Recommendations for experiment planning, data analysis, and data reporting. Frontiers in Neuroscience, 15, 630.
9. Kozlowska, K., et al. (2015). Fear and the defense cascade: Clinical implications and management. Harvard Review of Psychiatry, 23(4), 263–287.