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Vagus Nerve Health

Vagus Nerve Health

The Connection Between Your Vagus Nerve and Overall Health

Dr. Johr adjusting a patient's upper neck with a light, nervous-system focused technique

The vagus nerve is the longest cranial nerve in your body, running from the base of your skull down through your neck and chest and into your abdomen. Along the way it connects to your heart, your lungs, your digestive tract, and your immune system. It is the main highway of your parasympathetic nervous system, the branch responsible for rest, digestion, and recovery.

If you have been dealing with several health challenges that never seem to fully resolve, poor sleep, sluggish digestion, a racing heart, a hair-trigger stress response, there is a good chance the vagus nerve is part of the picture. When vagal tone is low, the body has a harder time shifting out of stress mode and into the calm, restorative state where healing actually happens.

The vagus nerve exits the skull very close to the upper cervical spine, which is one reason nervous system interference in that area can affect vagal function. Our doctors use gentle Koren Specific Technique (KST) and Talsky Tonal Chiropractic (TTC) adjustments to support healthy communication in this part of the spine.

How Low Vagal Tone Shows Up

Low vagal tone rarely announces itself as one clear symptom. For some people it feels like a resting heart rate that never quite settles, even on a lazy Sunday with nothing stressful happening. For others it shows up as digestion that moves too slowly, too erratically, or reacts badly to foods that never used to bother them. Sleep can turn shallow and interrupted, small stressors can feel disproportionately overwhelming, and colds or minor illnesses can seem to hang on longer than they should. Because the vagus nerve touches so many systems at once, low vagal tone often shows up as several loosely connected complaints rather than one obvious problem.

One nerve reaching from the base of the skull into the gut means a single pinch point can echo through heart rate, digestion, and immune response all at once.

What Affects Vagal Tone

Vagal tone can be worn down by chronic stress, poor sleep, and a nervous system that spends too much time in a guarded, alert state. It can also be affected structurally: the vagus nerve exits the skull through a narrow opening right next to the upper cervical spine, so a subluxation or restriction in that specific area can interfere with how well the nerve communicates with the heart, lungs, and gut. Identifying whether the upper neck is part of your picture is a key part of getting an accurate read on what is driving your symptoms.

Our Approach

We start with a conversation about your history, especially anything touching sleep, digestion, or stress, then use precise, non-invasive INSiGHT thermal, heart rate variability, and surface EMG scans to assess function in and around the upper cervical spine, backed by a written report of findings.

From there, our doctors use Koren Specific Technique (KST) and Talsky Tonal Chiropractic (TTC), light, nervous system focused contacts with no cracking or twisting, to correct the specific area near where the vagus nerve exits the skull. You can be adjusted seated, standing, or in whatever position is most comfortable for you.

What to Expect

Every nervous system responds on its own timeline. Some patients notice a calmer resting state or easier digestion within the first few visits, while others need a longer stretch of consistent care before the shift becomes obvious. Because our techniques are gentle, there is no added strain or discomfort layered on top of what you are already managing, and our doctors track your INSiGHT scans over time so progress is measured, not guessed at.

What Patients Notice

A calmer resting state and an easier time winding down at night. Digestion that feels smoother and more predictable, with fewer complaints after meals.

Fewer illnesses and quicker recovery when something does come on, plus a heart rate that feels more settled even during ordinary daily stress.

Take the First Step

If sleep, digestion, or stress have felt connected but unresolved, come talk with our doctors in Royal Oak.

Book Your Consultation

Common Questions

What is the vagus nerve and why does it matter?
The vagus nerve is the longest cranial nerve in the body, running from the base of the skull through the neck and chest into the abdomen, where it connects to your heart, lungs, digestive tract, and immune system. It is the main pathway of your parasympathetic nervous system, the branch responsible for rest, digestion, and recovery, so how well it is functioning touches far more of your health than most people realize.
What does low vagal tone feel like?
It rarely looks like one single symptom. Common signs include a resting heart rate that feels elevated for no clear reason, trouble winding down even during genuine downtime, sluggish or erratic digestion, getting sick more often, and small stressors that feel bigger than they should. Because the vagus nerve touches so many systems, these complaints often show up together rather than alone.
Why does the upper neck matter for vagus nerve function?
The vagus nerve exits the skull through a narrow opening right next to the upper cervical spine. A subluxation or restriction in that specific area can interfere with how well the nerve communicates with the heart, lungs, and digestive system, which is why our doctors pay close attention to that region and use INSiGHT scanning to assess function there before adjusting.
Is this approach safe and gentle?
Yes. Our doctors use Koren Specific Technique (KST) and Talsky Tonal Chiropractic (TTC), light, nervous system focused contacts with no cracking, twisting, or forceful manipulation. You can be adjusted seated, standing, or in whatever position is most comfortable, which makes this approach appropriate for a wide range of ages and sensitivities.
How quickly might I notice a difference?
Every nervous system responds on its own timeline. Some patients notice a calmer resting state or easier digestion within the first few visits, while others need a longer stretch of consistent care before the shift becomes obvious. Our doctors track your INSiGHT scans over time so your progress is measured rather than guessed at.
Can this help with anxiety, digestion, or immune concerns specifically?
Because the vagus nerve is directly involved in heart rate regulation, digestive motility, and immune signaling, supporting healthy vagal tone can influence all three at once. Rather than treating anxiety, digestion, and immune concerns as three separate problems, our doctors work with the nerve pathway that connects them, and many patients notice improvement across more than one area.

Related: Fight or Flight Response · Nervous System 101 · Anxiety & Stress · Digestive & GI Issues · Immune Support

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