Anxiety is one of the major challenges of the 21st century: racing thoughts, a pounding heart, restless sleep…
What if the vagus nerve were one of the key players in calming this inner turmoil? In this article, I invite you to explore the depths of your nervous system to better understand this invisible link between your brain, body, and emotions, and offer you a practical guide to activating and balancing it, helping you restore lasting calm and balance.
In this article, you will learn:
- What the vagus nerve is and the role it plays in managing anxiety
- The underlying biological and psychological mechanisms
- Effective techniques for stimulating and strengthening vagus nerve activity
- How to integrate them into your daily life to regain true, lasting inner harmony
The Vagus Nerve: A Bridge Between Body, Brain, and Emotions
Anatomy and Physiological Role
The vagus nerve, or pneumogastric nerve (tenth cranial nerve), is the longest of the cranial nerves. It originates in the brainstem, descends through the neck, and innervates the heart, lungs, and digestive system, playing a major role within the autonomic nervous system.
It has two components:
- Afferent fibers (about 80%) that carry information from the organs to the brain
- Efferent fibers (about 20%) that regulate target organs such as the heart and intestines
Through this bidirectional role, the vagus nerve plays a key part in gut–brain communication, hormonal balance, inflammatory regulation, and maintaining equilibrium between stress and rest.
The Vagus Nerve and the Polyvagal Theory
The polyvagal theory, developed by Stephen Porges, helps us better understand how the autonomic nervous system functions and how it affects our well-being. According to this approach, the autonomic nervous system (ANS) operates through three main states, which activate depending on our perception of safety or danger:
- Ventral vagal state: social safety (rest, connection, calm, openness)
- Sympathetic state: mobilization (fight/flight, agitation, defense)
- Dorsal vagal state: shutdown (slowing down, dissociation, withdrawal)
In a state of chronic anxiety, hyperactivation of the sympathetic system or vagal dysregulation can keep the body in a constant state of alert. Stimulating the vagus nerve helps promote the ventral vagal state, a condition of inner safety, connection, and rest.
Vagus Nerve, Inflammation, and the Microbiota
Research, including studies by Inserm (the French National Institute of Health and Medical Research), shows that the vagus nerve acts as a mediator between the gut microbiota and the brain. A microbial imbalance can send distress signals via the vagus nerve, contributing to depression, anxiety, and chronic inflammation.
These findings, supported by other studies, highlight the vagus nerve’s role in certain psychological disorders, including chronic anxiety, and open up new therapeutic possibilities. Stimulating the vagus nerve through emotional regulation techniques such as slow breathing, cardiac coherence, meditation, or targeted massage may enhance the effectiveness of therapy by supporting nervous system regulation.
In other words, a strong vagus nerve helps protect against anxiety, while a weakened vagus nerve can contribute to and sustain it.
Vagus Nerve and Anxiety: What Are the Links?
The Role of the Autonomic Nervous System (ANS)
The ANS acts as the conductor of our internal balance. It naturally regulates our heart rate, breathing, digestion, and our responses to stress and anxiety. It also influences our emotional awareness and our ability to connect with ourselves and others.
When balanced, it allows smooth transitions between states of activation (energy, focus, action) and states of rest (calm, recovery, inner safety). This movement between states is flexible, fluid, and almost imperceptible.
In chronic anxiety, this natural rhythm can become disrupted. The system may remain stuck in “alert” mode or swing into shutdown. This leads to states of constant tension, emotional overwhelm, or, conversely, withdrawal, fatigue, and even dissociation.
The autonomic nervous system has two main branches:
- Sympathetic nervous system (activation)
- Parasympathetic nervous system (rest and recovery)
The vagus nerve is part of the parasympathetic branch. It acts as the body’s natural brake, counterbalancing the activating effect of the sympathetic system. When the parasympathetic system is active, the heart slows, breathing deepens, and the mind settles.
If you’d like to learn more about nervous system healing (regulation), you can visit my dedicated page by clicking here.
Recognizing a Weakened Vagus Nerve
Low vagal activity is often identified through reduced heart rate variability (HRV).
When vagus nerve activity is low, the body more easily switches into “alert” mode, driven by the sympathetic system — increasing the likelihood of stress, anxiety, or hypervigilance.
This can manifest as:
- Short, shallow breathing
- Rapid heartbeat or palpitations
- Muscle tension (tight throat, back or shoulder pain, etc.)
- Digestive discomfort (bloating, constipation, slow digestion, etc.)
- Sleep disturbances (difficulty falling asleep, frequent awakenings, etc.)
- Mood swings, rumination, intrusive thoughts
Simple Self-Assessment Exercise
Take five minutes in a quiet place to observe your body: place one hand on your chest and the other on your stomach while breathing naturally. Notice your breathing rate (fast or slow), your physical tension, and the state of your thoughts (racing, looping, or calm). Then, rate your overall sense of calm on a scale of 1 to 10.
If you wish, you can also take the Dysregulated Nervous System Test by clicking here. it only takes a few minutes and can help you better understand your current state.
Scientific Advances
Several recent studies demonstrate promising effects of vagus nerve stimulation (VNS) in anxiety and depressive disorders.
For example:
- A study on precision shooters found that 30 minutes of daily vagal stimulation for four weeks significantly reduced stress and somatic anxiety. MDPI, 2025.
- Kumagai, Isoguchi Shiramatsu & Kawai proposed a theoretical model showing that VNS modulates the balance between feedforward and feedback neural signals, promoting adaptive brain plasticity in emotional circuits and opening new avenues for therapeutic understanding. arXiv, 2025.
- In Nature Communications, a study on stressed mice showed that VNS influenced interactions between the prefrontal cortex and the amygdala, affecting anxiety-related behaviors. Nature, 2024.
- Another study suggested that VNS could help individuals with autism spectrum disorder better manage fear and anxiety by supporting emotional regulation and reducing fear responses. PMC, 2022.
- A 2024 study in JAMA Network Open showed that transauricular vagus nerve stimulation (taVNS) significantly improved sleep quality and reduced insomnia compared to a control group, with additional positive effects on mood and anxiety. JamaNetwork, 2024; PMC, 2025; NeuromodulationJournal, 2025.
- Similarly, an OUP Academic study (2024) found that targeted VNS improved sleep and autonomic function in veterans with post-traumatic stress disorder. Sleep, 2025.
From Research to Therapy: How to Naturally Stimulate the Vagus Nerve
Practical Exercises
Diaphragmatic Breathing
Breathe slowly through your nose, allowing your stomach to expand as you inhale and relax as you exhale.
Inhale for 4 seconds,
Hold your breath for 1 to 2 seconds,
Exhale for 6 to 8 seconds,
Do this exercise for 5 to 10 minutes.
If you would like to learn more, I invite you to read my article How Breathing Consciously Helps You Manage Stress in a Healthy Way, where you will also find practical exercises, by clicking here.
Cardiac Coherence
This practice helps regulate your heart rhythm and synchronize your heart and brain.
Inhale for 5 seconds
Exhale for 5 seconds
Practice for 5 minutes, three times a day
If you want to go further, I invite you to read my article How Breathing Consciously Helps You Manage Stress in a Healthy Way, where you will also find practical exercises and a video on cardiac coherence, by clicking here.
Vocal Vibrations (Hum/Om, Singing, Gurgling)
Soft vocal sounds create gentle vibrations in the throat and mouth, stimulating vagus nerve fibers. You can do this before meditation or after a stressful moment.
Hum gently or make the sound “mmm” while lightly covering your ears for one minute.
Cold Exposure
A short cool shower or splash of cold water on your face activates the vagal branch.
End your shower with 15–30 seconds of cool water, increasing gradually each day.
Self-Massage
While lying down or sitting, make slow circular movements around your navel (clockwise) or gently massage around your ears by pulling slightly on the lobes for 2–3 minutes. Breathe deeply throughout.
Mindful Walking & Sensory Stimulation
This mindful connection to your senses soothes mental rumination and activates the parasympathetic system.
Spend five minutes walking barefoot on grass or soft ground. Feel the texture beneath your feet, the contact with the earth, and the sounds around you. This mindful connection to your senses soothes mental rumination and activates the parasympathetic system.
Mini Daily Routine
You can combine two or three techniques into a short 10-minute routine in the morning or evening, for example:
- 5 minutes of cardiac coherence
- 1 minute of humming
- A brief warm-to-cold shower for 30 seconds
Practice this routine daily for at least 21 days to notice tangible benefits on your mood, sleep, thoughts, and heart rate.
Precautions and Limitations
Vagus nerve stimulation, especially when performed with devices, should never replace medical or psychotherapeutic care, particularly in cases of severe anxiety or comorbid psychological conditions.
Avoid certain techniques, such as carotid /neck) massage or pressure on the eyes, unless guided by a qualified professional.
Always adapt the intensity, frequency, and duration of exercises to your own sensitivity: start gently and observe your body’s responses.
If you feel dizzy, experience palpitations, or discomfort, stop and resume later at a slower pace.
Rediscover Inner Harmony: Individual Support to Go Further
Caring for your nervous system, and especially your vagus nerve, means caring for the vital connection between your body and mind. By restoring this communication, you encourage deep and lasting relief from anxiety. Calmer breathing, more restful sleep, balanced emotions, step by step, your nervous system regains its natural ability to self-regulate.
If you feel the need for personal guidance, I offer individual sessions focused on nervous system regulation. As a psychologist and psychotherapist specializing in this field, I integrate psychocorporal and cognitive-behavioral approaches to help you restore your vagal tone, calm anxiety circuits, and regain lasting balance.
🌿 Discover my individual sessions by clicking here, or contact me directly through the form.
I wish you a peaceful journey of reconnection with your inner self, starting today.
