Does shocking your vagus nerve calm inflammation?
No consistent evidence for the anti-inflammatory effect of vagus nerve stimulation in humans: A systematic review and meta-analysis.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Despite strong mechanistic theories and animal studies, VNS showed no consistent effect on TNF-α or IL-6 in humans.
The cholinergic anti-inflammatory pathway is one of the most cited neural-immune pathways in biology—finding it doesn't translate to humans is a major surprise.
Practical Takeaways
Don't buy VNS devices expecting to reduce chronic inflammation or stress-related cytokines.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Despite strong mechanistic theories and animal studies, VNS showed no consistent effect on TNF-α or IL-6 in humans.
The cholinergic anti-inflammatory pathway is one of the most cited neural-immune pathways in biology—finding it doesn't translate to humans is a major surprise.
Practical Takeaways
Don't buy VNS devices expecting to reduce chronic inflammation or stress-related cytokines.
Publication
Journal
Brain, behavior, and immunity
Year
2023
Authors
C. Schiweck, S. Sausmekat, Tong Zhao, L. Jacobsen, A. Reif, Sharmili Edwin Thanarajah
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Claims (6)
Your vagus nerve is like a brake pedal for your body's stress response — when it's active, it calms down your immune system and reduces inflammation. If it's not working well, your body stays in high-alert mode and gets more inflamed.
Stimulating the vagus nerve might lower a marker of inflammation called CRP in people who are acutely sick, but the evidence is shaky because the studies were small and mixed, so we can't say it works for long-term inflammation.
Scientists have looked at 36 studies on a treatment that stimulates the vagus nerve to reduce inflammation, but the studies are too different and poorly done to say for sure if it actually works for any specific condition.
There's no clear proof that whether you use vagus nerve stimulation for a short or long time, or whether you do it with surgery or a device on the skin, changes how much inflammation your body has.
Doctors think stimulating the vagus nerve might reduce inflammation in the body, but we don't have solid proof yet — we need better studies to find out if it really works.