Chiropractic Care for Migraines: What the Research Says About the Neck-Nerve Connection
- Dr. Kayle Martinsen
- 6 days ago
- 3 min read
If you've read our migraine treatment page, you know we look at neck and spinal tension as one possible piece of the migraine puzzle. But how much does the research actually support that connection? Here's an honest look at what's been studied, what it found, and where the evidence is still thin.
What Clinical Trials Have Found
A handful of randomized controlled trials have tested chiropractic spinal manipulation specifically for migraine, rather than headaches in general.
A 2000 trial of 127 people with migraine found that two months of chiropractic spinal manipulative therapy led to statistically significant improvements in migraine frequency, duration, disability, and medication use compared to a control group.
A 2017 placebo-controlled trial found that adding spinal manipulative therapy to usual medical care reduced migraine days by close to two fewer per month on average, with about 22% of participants seeing a 90%+ reduction in migraines over the study period.
A broader review of the research notes that while some trials show benefit, the overall certainty of the evidence remains low, several studies carry a high or unclear risk of bias, and only about half of trials comparing real manipulation to a sham treatment found a significant difference.
Put simply: there's real signal in the data, but it's not the kind of slam-dunk evidence you'd get from a well-studied medication. Chiropractic care appears to help a meaningful share of migraine patients, but it doesn't work the same way for everyone, and more high-quality trials are needed before it can be called a proven standalone treatment.
Where the Vagus Nerve Fits In
You may have heard the vagus nerve mentioned alongside migraine care, and there's a real reason for that, though it's worth being precise about what's actually been studied. The vagus nerve and the trigeminal nerve, the nerve most directly involved in migraine pain, connect at shared points in the brainstem, so changes in vagal activity can influence how trigeminal pain signals get processed.
The strongest clinical evidence for this connection comes from dedicated vagus nerve stimulation devices, not from spinal manipulation. Randomized, sham-controlled trials of non-invasive vagus nerve stimulation found it increases the chances of being pain-free or having only mild pain within two hours of an attack, and a separate prevention trial found it meaningfully reduced migraine days with regular use.
Chiropractic care's proposed connection to the vagus nerve is more theoretical: the nerve travels close to the upper cervical spine as it exits the skull, so some practitioners, including this practice, consider whether tension or restriction in that area could be part of what's affecting a patient's symptoms. That's a working hypothesis drawn from anatomy, not a claim backed by trials testing chiropractic adjustment's direct effect on vagal tone in migraine patients specifically.
What This Looks Like at Asa Wellness Center
This is exactly why Dr. Martinsen treats migraines as a full health evaluation rather than assuming every case has the same driver. For some patients, neck and upper spine tension is clearly part of the picture; for others, hormonal, digestive, or inflammatory factors matter more. Our migraine treatment approach is built around figuring out which of those apply to you, rather than a one-size-fits-all adjustment plan.
Ready to find out what's actually driving your migraines? Schedule an appointment online or email asawellnesscenter@gmail.com. We're located at 2405 E. Southern Ave., Suite 3, Tempe, AZ.
This information is provided for educational purposes and shouldn't replace guidance from your prescribing physician or neurologist, especially if you're on migraine medication.
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