How Does the Vagus Nerve Affect Anxiety and Trauma Responses? A Therapist’s Guide

How Does the Vagus Nerve Affect Anxiety and Trauma Responses? A Therapist’s Guide to the Nerve That Runs Your Survival System

HEALING MODALITIES & THERAPEUTIC PROCESS • April 12, 2026

LAST UPDATED: APRIL 2026

Last reviewed: June 2026 by Annie Wright, LMFT

The Anxiety That Lives Below Your Throat

Simone is sitting in the back of a Town Car on her way to the airport. She’s a chief revenue officer at a Series D fintech company in San Francisco, and she just closed the biggest partnership deal of her career. Her team sent champagne to her hotel room. Her CEO texted four exclamation points, which, from this particular CEO, is the emotional equivalent of a standing ovation.

She should feel triumphant. Or at least relieved. Instead, there’s a sensation in her chest that she can’t name. Not quite pain, not quite pressure, but something between the two. A tightness that sits just below her collarbone and radiates down through her sternum into her stomach. Her hands are cold despite the heated seat. Her jaw is clenched. And underneath the polished veneer of a woman who just performed brilliantly under pressure, something inside her body is vibrating at a frequency that feels an awful lot like dread.

“It’s like my body didn’t get the memo that the hard part is over,” she told me the following week, sitting in my office with her hands wrapped around a mug of tea, still looking slightly hunted. “Intellectually, I know I nailed it. But my body feels like something terrible is about to happen.”

What Simone was describing. That persistent, below-the-surface anxiety that doesn’t match the reality of what’s happening in your life. Is, in many cases, a story about the vagus nerve. Specifically, it’s a story about what happens when the longest, most influential nerve in your body has been shaped by years of relational trauma to prioritize threat detection over rest, vigilance over ease, survival over connection.

And if you’re a driven woman who’s been told your anxiety is “just stress” or “the cost of success”. This nerve, and its role in your trauma responses, may be the most important thing no one has explained to you.

What Is the Vagus Nerve?

The vagus nerve is, in many ways, the most important nerve you’ve never heard of. Or if you have heard of it, you’ve probably encountered it in an Instagram reel about “vagus nerve hacks” without fully understanding what it is and why it matters so much for anxiety and trauma.

Here’s what makes it essential for understanding your anxiety and trauma responses: the vagus nerve doesn’t just carry signals. It regulates your entire stress response. It determines how quickly your heart rate rises when you encounter a threat and. Critically. How quickly it comes back down once the threat passes. It influences your digestion, your immune function, your capacity for social engagement, and your ability to shift from states of alarm to states of calm.

Stephen Porges, PhD, neuroscientist and Distinguished University Scientist at the Kinsey Institute, Indiana University Bloomington, whose polyvagal theory transformed the field of trauma therapy, identified two distinct branches of the vagus nerve that serve very different functions: (PMID: 7652107)

The ventral vagal branch (the newer, myelinated branch unique to mammals) connects to the muscles of the face, throat, and middle ear. When this branch is active, you feel safe, connected, socially engaged. Your heart rate is steady, your breathing is relaxed, your face is expressive, and your voice has warmth and melody. This is the branch that supports connection, creativity, and calm.

The dorsal vagal branch (the older, unmyelinated branch shared with reptiles) connects to organs below the diaphragm. Particularly the gut and abdominal organs. When this branch activates in response to overwhelming threat, it triggers shutdown: heart rate drops, blood pressure falls, digestion stalls, and you may experience numbness, dissociation, brain fog, or collapse.

Between these two branches sits the sympathetic nervous system, which mobilizes you for fight or flight. Together, these three systems form the foundation of how your body navigates every moment of your life. Every meeting, every conversation, every midnight thought, every Sunday morning that either feels spacious or suffocating.

The Neurobiology of How the Vagus Nerve Regulates Your Stress Response

To understand why the vagus nerve matters so much for anxiety and trauma, you need to understand a concept called vagal tone.

Here’s how it works in practice: imagine you’re in a meeting and your manager unexpectedly criticizes a project you led. In a person with high vagal tone, the body responds. Heart rate increases slightly, muscles tense. But the vagus nerve quickly applies what Porges calls the “vagal brake,” bringing the heart rate back down and allowing the prefrontal cortex to come back online. The person feels the initial jolt but recovers quickly, can think clearly, and responds thoughtfully.

In a person with low vagal tone. Particularly someone whose vagus nerve has been shaped by childhood trauma. The response looks very different. The vagal brake is weak. The initial jolt of activation escalates rather than settling. Heart rate climbs and stays elevated. The prefrontal cortex goes partially offline. The person may become flooded with anxiety, snap defensively, freeze and go blank, or dissociate entirely. Not because the criticism was devastating, but because their nervous system lacks the vagal infrastructure to regulate the response.

This is the mechanism beneath so much of the anxiety that driven women bring into my office: not a thought disorder, not a cognitive distortion that can be corrected with a worksheet, but a vagal tone issue. A nervous system that lacks the regulatory capacity to move fluidly between activation and calm.

Stephen Porges’s research has demonstrated that vagal tone is directly measurable through heart rate variability (HRV). People with higher HRV. Indicating stronger vagal tone. Show greater emotional regulation, better stress recovery, stronger immune function, and reduced risk of cardiovascular disease. People with lower HRV. Indicating weaker vagal tone. Show the opposite: chronic anxiety, slower stress recovery, increased inflammation, and greater vulnerability to both psychological and physical illness.

And here’s the critical connection to trauma: chronic early-life stress and relational trauma directly reduce vagal tone. When a child’s nervous system spends months or years in states of activation or shutdown. Because the home environment is unpredictable, frightening, or emotionally barren. The vagus nerve develops in an environment of chronic threat. It never fully builds the “muscle” of regulation. The vagal brake remains weak. And decades later, that person may present as a brilliant, accomplished professional who is privately consumed by anxiety that doesn’t match her circumstances. Because the architecture of her nervous system was built for survival, not for thriving.

In my work with clients, I draw on an emerging body of research on polyvagal theory and the autonomic nervous system to help driven women understand the physiological basis of their nervous system responses to anxiety and trauma.

How Vagus Nerve Dysfunction Shows Up in Driven Women

In my clinical work with driven women, vagus nerve dysfunction rarely presents as a single dramatic symptom. It presents as a constellation. A cluster of experiences that the woman has been managing, compensating for, and white-knuckling through for years, often without realizing they’re all connected.

Monique is a forty-one-year-old appellate attorney in Washington, D.C. She came to me not because of anxiety. She’d never use that word about herself. But because of what she called “a body that won’t cooperate.” Chronic acid reflux that three gastroenterologists couldn’t fully explain. Insomnia that wasn’t about racing thoughts but about a wired, buzzing feeling in her body that made it impossible to relax into sleep. A startle response so hair-trigger that she’d jump visibly when someone knocked on her office door. And a low-grade nausea that accompanied every high-stakes brief she wrote, every oral argument she prepared for, every Sunday night before a Monday deadline.

“I’ve been told it’s stress,” she said flatly. “But I’ve always been stressed. This is different. This is my body doing things I can’t control.”

When we explored Monique’s history, the picture became clearer. She grew up with a mother who was intermittently warm and intermittently rageful. The kind of emotionally unpredictable environment where a child’s nervous system never gets the chance to develop strong vagal tone, because safety is never consistent enough for the vagal brake to build strength. Monique’s body had been in some version of sympathetic activation since she was small. She’d built a brilliant career on top of that activation. Channeling the hypervigilance into meticulous legal work, channeling the cortisol into productivity. But her vagus nerve had been underdeveloped from the start, and now, at forty-one, her body was presenting the bill.

Here’s what I see consistently in driven women with compromised vagal function:

Chronic digestive issues. The vagus nerve directly innervates the stomach, intestines, and digestive organs. When vagal tone is low, digestion slows, acid production becomes erratic, and the gut-brain axis. The communication loop between your digestive system and your brain. Becomes dysregulated. IBS, acid reflux, chronic nausea, bloating, and food sensitivities that seem to come and go without clear patterns. These are often vagal stories as much as gastroenterological ones.

An exaggerated startle response. The vagal brake is supposed to help your body quickly recover from momentary startles. When vagal tone is low, the startle response is amplified and recovery is slow. You don’t just flinch. You flood.

Difficulty transitioning from work to rest. Many driven women describe an inability to “come down” after work. They can’t relax on vacations. They can’t fall asleep even when exhausted. This is the vagus nerve struggling to shift the body from sympathetic activation to parasympathetic rest. The on-switch works fine. The off-switch is broken.

Anxiety that doesn’t respond to cognitive techniques. If you’ve tried thought records, breathing exercises, positive self-talk, and the anxiety persists. It may not be a thought problem. It may be a vagal tone problem. The anxiety isn’t originating in your thoughts. It’s originating in a dysregulated nervous system that your thoughts are then trying to make sense of.

Oscillation between hyper-activation and collapse. Driven women with low vagal tone often describe swinging between two states: a wired, anxious, can’t-sit-still activation and a crashed, foggy, can’t-get-off-the-couch collapse. This is the nervous system toggling between sympathetic fight-or-flight and dorsal vagal shutdown without sufficient vagal regulation to find the middle. The ventral vagal sweet spot of calm, present engagement.

The Vagus Nerve, Anxiety, and the Gut-Brain Connection

One of the most clinically significant aspects of vagus nerve function. And one of the least understood outside of specialized trauma therapy. Is the gut-brain axis: the bidirectional communication pathway between your digestive system and your brain, with the vagus nerve serving as the primary conduit.

This is why so many of my clients with relational trauma histories have spent years in gastroenterologists’ offices before arriving in my therapy room. They’ve had the scopes, the scans, the elimination diets. Some have been diagnosed with IBS or “functional gastrointestinal disorder”. Which is medical language for “your gut is malfunctioning and we don’t fully understand why.”

What those diagnoses often miss is the vagal component: a nervous system that was shaped by early-life stress, resulting in impaired vagal tone, which disrupts the gut-brain communication that healthy digestion depends on. The gut isn’t broken. The nerve that regulates it is carrying the imprint of trauma.

Bessel van der Kolk, MD, psychiatrist and trauma researcher at Boston University, and author of The Body Keeps the Score: Brain, Mind, and Body in the Healing of Trauma, writes extensively about how trauma is stored in the body. Not just in the mind, not just in memory, but in the autonomic nervous system, the muscular system, and the visceral organs. The vagus nerve, with its extensive innervation of the gut, heart, and lungs, is a primary vehicle for that storage. When we say “the body keeps the score,” we could just as accurately say “the vagus nerve keeps the score.” (PMID: 9384857)

In my work with driven women, I often encounter this paradox: the more they achieve externally, the more hollow the achievement can feel when it’s built on a nervous system that never learned to rest in safety.

For driven women, the gut-brain connection carries a particular poignancy. These are women who’ve learned to trust their intellect over their intuition, their analysis over their felt sense. They’ve been rewarded for ignoring their bodies. For powering through the nausea before the presentation, for dismissing the stomach drop when a colleague’s tone shifts, for overriding the “bad feeling” about a relationship or a decision because the data looked fine on paper.

What polyvagal-informed therapy helps these women understand is that those gut signals weren’t noise. They were data. Vagal data, traveling from the enteric nervous system to the brain, carrying information about safety and threat that the cognitive mind hadn’t yet registered. Learning to listen to those signals, rather than override them, is a central part of nervous system repair.

Both/And: Your Vagus Nerve Is Both the Problem and the Pathway Back

Here’s the Both/And I hold in my clinical work around the vagus nerve, and I think it’s one of the most hopeful things I can share:

The vagus nerve that carries the imprint of your trauma is the same nerve through which your healing can travel.

Carmen is a cardiothoracic surgeon in her late forties who came to therapy because of panic attacks that had begun during a contentious divorce. By the time she arrived in my office, she’d had a full cardiac workup (her heart was healthy), had tried two SSRIs (moderate benefit), and was becoming increasingly alarmed by the gap between her professional capacity. She operated on human hearts for a living. And her private experience of a body that seemed to be falling apart.

When I introduced the vagal framework to Carmen, something shifted in her face. As a physician, she understood anatomy. But she’d never considered that the nerve she’d studied in medical school. The one she encountered in every thoracic surgery. Might be the key to understanding her own anxiety.

“You’re telling me,” she said slowly, “that the nerve I hold in my hands three times a week is the same nerve that’s been making me feel like I’m dying.”

Yes. And the same nerve that, once we understood how to work with it, became the primary vehicle for her healing.

That’s the Both/And. The vagus nerve is both the pathway through which trauma responses travel and the pathway through which regulation returns. Low vagal tone isn’t a permanent sentence. It’s a current state that can change. Research on vagal tone plasticity shows that targeted interventions. Breathwork, vocalization, specific forms of movement, cold exposure, and particularly the co-regulatory experience of safe therapeutic relationship. Can measurably increase vagal tone over time.

This means the driven woman who’s been living with low-grade chronic anxiety for twenty years isn’t looking at a life sentence. She’s looking at a nervous system that learned one set of defaults in an environment that required them. And is capable, with the right support, of building new ones. Not by overriding the old system with willpower. By literally strengthening the vagus nerve’s capacity to apply the brake, to shift from activation to calm, to support the transition from survival to connection.

Both things are true: your vagus nerve has been shaped by what happened to you, and it can be reshaped by what you do next. The biology is not destiny. It’s a starting point.

The Systemic Lens: Why Some Bodies Never Learned to Rest

I can’t talk about the vagus nerve and anxiety without talking about the environments that compromise vagal tone. Not just family environments, but systemic ones.

Low vagal tone isn’t only the product of individual childhood trauma. It’s also the product of chronic, systemic stress. Research has consistently shown that populations experiencing ongoing racial discrimination, poverty, food insecurity, housing instability, and workplace harassment show lower average vagal tone and higher rates of the health conditions associated with vagal dysfunction: cardiovascular disease, autoimmune disorders, chronic inflammation, anxiety, and depression.

For driven women specifically, there’s a systemic factor that’s rarely named in discussions of vagal health: the professional cultures they navigate are often designed to keep the nervous system in sympathetic activation. The 24/7 availability expectations. The performance cultures that treat rest as weakness. The meeting-saturated schedules that leave no transition time for the nervous system to downshift. The implicit message that a woman’s value lies in her output, not her wellbeing.

These environments don’t just create stress. They actively prevent vagal recovery. A nervous system that is never given sufficient safety, rest, and co-regulation cannot build or maintain strong vagal tone. No matter how many ice baths or breathing exercises the person layers on top. Individual vagal practices in the context of systemically toxic environments are like putting bandaids on a wound that keeps getting reopened.

This matters because it’s easy, in the wellness space, to frame vagal health as an individual responsibility. “Just stimulate your vagus nerve! Cold plunge! Breathwork! Gargling!” And those practices genuinely help. But without naming the systemic conditions that chronically compromise vagal function. The workplaces, the cultural pressures, the relational systems that keep the nervous system in perpetual activation. We’re asking women to heal a systemically inflicted wound through individual effort alone.

In my practice, I hold both: we work to build each individual client’s vagal tone through targeted somatic and therapeutic interventions, and we name the systems that need to change so that nervous system health isn’t a luxury available only to those with the privilege of rest.

How to Support Your Vagus Nerve and Begin to Heal

If you’re recognizing yourself in this article. If the constellation of symptoms, the gap between your external competence and your internal chaos, the body that won’t cooperate despite your best cognitive efforts. Here’s what I want you to know about beginning to work with your vagus nerve rather than against it.

Start with accurate assessment. Consider asking your doctor about heart rate variability (HRV) testing, which provides a direct measure of vagal tone. Many wearable devices (Apple Watch, Oura Ring, WHOOP) now track HRV, which can give you a baseline and help you track changes over time. Low HRV isn’t a diagnosis. It’s information. And for driven women, data can be a powerful entry point into body awareness.

Understand the hierarchy of vagal interventions. Not all “vagus nerve hacks” are created equal. The research supports a hierarchy of effectiveness. At the top: safe, attuned therapeutic relationship (the most powerful vagal toner known to neuroscience, because co-regulation is the primary mechanism through which the ventral vagal branch develops). Next: targeted breathwork, particularly slow exhale breathing (inhale for 4 counts, exhale for 6-8 counts), which directly stimulates vagal tone through respiratory sinus arrhythmia. Then: vocalization (singing, humming, chanting, gargling), which engages the muscles of the pharynx and larynx connected to the ventral vagal branch. Then: cold exposure (cold water on the face, cold showers), which triggers the mammalian dive reflex and activates vagal tone. Then: movement, particularly gentle rhythmic movement like walking, rocking, and swimming.

Prioritize co-regulation over self-regulation. This is the piece that gets lost in the wellness industry’s focus on individual practices: your vagus nerve was designed to be toned through relationship. The ventral vagal branch develops in infancy through attunement with a caregiver. Through the experience of having your distress met with a calm, warm presence. If that developmental experience was missing or inconsistent, the therapeutic relationship can provide it now. A skilled trauma therapist doesn’t just teach you about your vagus nerve. They are the vagal intervention. Their regulated presence, their attuned voice, their steady attention activating your ventral vagal pathway in real time, session after session, until your nervous system begins to build the capacity it was never given the chance to develop.

Don’t pathologize the symptoms. Decode them. Your chronic anxiety, your digestive issues, your insomnia, your exaggerated startle response. These aren’t evidence that something is wrong with you. They’re evidence that your vagus nerve has been carrying a heavier load than it was designed to carry, for longer than any nervous system should have to sustain. Approaching these symptoms with curiosity rather than frustration is itself a vagal practice: it shifts you from the threat response of “What’s wrong with me?” to the ventral vagal orientation of “What is my body trying to tell me?”

Consider integrative approaches. The most effective approaches to vagal healing combine somatic therapy (Somatic Experiencing, Sensorimotor Psychotherapy), EMDR, relational therapy, and body-based practices in an integrated treatment plan. In my practice, I weave these modalities together because the vagus nerve doesn’t exist in isolation. It’s part of a whole system that includes body, mind, relationship, and environment. Healing the vagus nerve means healing all the layers simultaneously.

If you’re considering working with a therapist who understands the vagal dimension of trauma healing, you can explore individual therapy with me or my executive coaching practice. My Fixing the Foundations^™ course also addresses nervous system regulation in depth, and my Strong & Stable newsletter covers this kind of clinical writing weekly.

What I want to leave you with is this: the vagus nerve that carries your anxiety also carries your capacity for calm. The nerve that transmits the imprint of what happened in childhood also transmits the possibility of repair. You don’t need to outsmart your nervous system or override your body’s signals. You need to understand the language your vagus nerve is speaking. And, slowly, with the right support and the right safety, teach it a new story about what’s possible for you now.

Related Reading

Porges, Stephen W. The Polyvagal Theory: Neurophysiological Foundations of Emotions, Attachment, Communication, and Self-Regulation. W.W. Norton & Company, 2011.

van der Kolk, Bessel. The Body Keeps the Score: Brain, Mind, and Body in the Healing of Trauma. Penguin Books, 2014.

Dana, Deb. The Polyvagal Theory in Therapy: Engaging the Rhythm of Regulation. W.W. Norton & Company, 2018.

Breit, Sigrid, et al. “Vagus Nerve as Modulator of the Brain-Gut Axis in Psychiatric and Inflammatory Disorders.” Frontiers in Psychiatry 9 (2018): 44.

Levine, Peter A. In an Unspoken Voice: How the Body Releases Trauma and Restores Goodness. North Atlantic Books, 2010.

References

Peer-Reviewed Research (Vancouver)

1. van der Kolk BA, Wang JB, Yehuda R, Bedrosian L, Coker AR, Harrison C, et al. Effects of MDMA-assisted therapy for PTSD on self-experience. PLoS One. 2024;19(1):e0295926. doi:10.1371/journal.pone.0295926. PMID: 38198456.
2. Porges SW. Polyvagal Theory: Current Status, Clinical Applications, and Future Directions. Clin Neuropsychiatry. 2025;22(3):169-184. doi:10.36131/cnfioritieditore20250301. PMID: 40735382.

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