Meet Your Vagus Nerve: The Body’s Brake Pedal
The vagus nerve (cranial nerve X) governs “rest and repair.” It slows heart rate, deepens breathing, aids digestion, and controls inflammation. Higher vagal tone—measured by heart-rate variability (HRV)—predicts resilience and longevity.
How Chiropractic Influences Vagal Tone
Spinal adjustments normalize segmental motion and afferent input to the brainstem. That input modulates autonomic centers that govern vagal output. Correcting joint mechanics reduces sympathetic over-drive and boosts parasympathetic (vagal) activity.
Why this matters: Calming the sympathetic system helps heart rhythm, digestion, immune function, sleep and mood — the pillars of longevity.
Evidence Spotlight — Dr. Daniel Murphy’s Core Studies
- Budgell BS, Polus BI (2006) — Thoracic manipulation increased HRV, showing parasympathetic shift. *J Manipulative Physiol Ther.*
- Haavik H, Murphy BA (2012) — Cervical manipulation altered sensorimotor integration, suggesting brainstem autonomic effects. *J Manipulative Physiol Ther.*
- Pickar JG, Bolton PS (2012) — Review of somatosensory mechanisms underlying spinal manipulation. *Spine J.*
- Tracey KJ (2002) — Described the “inflammatory reflex,” a vagus-mediated anti-inflammatory pathway. *Nat Rev Immunol.*
- Pavlov VA, Tracey KJ (2012) — Linked vagal signaling to immune and metabolic regulation. *Brain Behav Immun.*
- Koopman FA et al (2016) — Vagus nerve stimulation reduced cytokines in rheumatoid arthritis patients. *Proc Natl Acad Sci USA.*
- Clancy JA et al (2014) — Non-invasive VNS modulated autonomic function. *J Physiol.*
- Bakris GL et al (2007) — Atlas vertebra realignment lowered blood pressure in hypertensive patients. *J Hum Hypertens.*
Vagal Tone & Longevity
Better vagal tone means lower inflammation, improved metabolism, and emotional balance — factors strongly linked to lifespan and healthspan.
How We Support Your Vagal Health
- Comprehensive cervical/thoracic exam & HRV snapshot (if appropriate)
- Targeted adjustments to stimulate parasympathetic pathways
- Breathing and mobility drills to enhance recovery
- Progress tracking to optimize long-term results
Bottom line: Healthy longevity starts with a balanced nervous system. Evidence-based chiropractic care can help activate your vagal “longevity switch.”