Chiropractic neck care showed no added risk of a torn artery against ibuprofen in 431,492 matched pairs

The worry has been around for decades, and it is specific: that having your neck manipulated can tear one of the arteries running up to your brain. The tear is real and it does cause strokes, mostly in people young enough that a stroke is the last thing anyone expects. Whether the manipulation causes it has been argued over for thirty years on thin evidence. A new analysis of United States health records puts 431,492 patients who had their neck manipulated beside the same number who were handed a prescription for ibuprofen.

Over the following month, tears were rare in both groups, and no more common among the people who had been manipulated.

What is a cervical artery dissection?

Four arteries carry blood up the neck to the brain, two at the front and two threaded through the bones of the spine. A dissection is a tear in the inner lining of one of them. Blood works into the tear, the vessel narrows, and a clot can form and travel, which is how a tear in the neck becomes a stroke in the brain.

It is uncommon, and it skews young. That combination is what makes it frightening out of proportion to its frequency, and what has kept the argument about neck manipulation alive.

Why the comparison was built around ibuprofen

Here is the trap the study is designed around, and it is worth understanding before any number. A dissection announces itself with neck pain and headache, days before it causes a stroke. So a person whose artery is already tearing goes looking for help with their neck, and some of them see a chiropractor. The manipulation did not cause the tear; the tear caused the visit.

The authors name this: protopathic bias arising from care-seeking for cervical artery dissection symptoms may overestimate observed associations. The fix is to compare against people who did the same thing for the same reason. So the control group is not the general public; it is adults seeking care for the same new neck pain or headache who came away with an ibuprofen prescription instead.

Writing in Chiropractic and Manual Therapies, the team searched United States linked health records and claims data from 2010 to 2025, excluded anyone with previous cerebrovascular disease or dissection, and used propensity matching to minimize confounding. That left 431,492 patients per cohort, which is a large number of people for a rare event.

What the risk of a torn artery actually was

Lower after manipulation, not higher. In the manipulation cohort, compared with the ibuprofen cohort, the risk of dissection was lower while the absolute difference was minimal: about six fewer events per 100,000 patients. Looked at by vessel, carotid artery dissection risk was lower; vertebral artery dissection risk was not significantly different.

“People often ask me whether chiropractic care for neck pain is safe,” said Christine Goertz, a co-author of the study. “This study is some of the best evidence yet that the answer to that question is yes.”

The authors’ own conclusion is phrased more narrowly, and the narrower version is the one to keep: the study found no evidence of an increased risk of dissection after chiropractor-administered neck manipulation compared with an ibuprofen prescription.

Why a lower artery-tear rate is not a benefit

This is the part that gets misread, so it is worth being blunt: nobody should take from this that manipulation protects your arteries. A risk that comes out lower than the comparison group in an observational study usually says something about who receives the treatment rather than what the treatment does.

Chiropractors screen. A patient who arrives with a thunderclap headache, dizziness and a stiff neck is the patient a careful clinician sends to an emergency department rather than adjusts. If that screening works even moderately well, it removes exactly the people most likely to be dissecting already, and the treated group ends up looking healthier than the comparison group for reasons that have nothing to do with the treatment.

The honest reading of a result like this is that it makes a large added risk hard to believe, and says little about a small one.

What a records study of neck manipulation cannot show

Records capture billing codes, not what happened in the room. The study cannot describe the technique used, how much force was applied, or whether the neck was rotated, and those are the details any mechanical explanation would turn on.

The 30-day window is another limit. It is the right window for an injury that shows up quickly, and it would miss anything slower. The authors also report that their negative control outcomes were partially balanced, a check for hidden differences between the groups that came back short of clean. The matching is good rather than perfect. Only a randomized trial would settle it, and for an event this rare no such trial is going to be run.

What to do with this if your neck hurts

Most neck pain is not a torn artery, and both of the treatments compared here are ordinary responses to it. MedlinePlus notes that falls or accidents, including car accidents, are another common cause of neck pain.

What deserves attention is the pattern that does not fit. Sudden severe neck pain or a headache unlike any you usually get, particularly alongside dizziness, double vision, slurred speech or weakness down one side, is an emergency whoever you were planning to see. The authors make the same point in their own way, noting that despite the rarity of these events, all clinicians should maintain vigilance for dissection symptoms. That holds for the patient too: the useful vigilance is about the symptoms, not about the treatment table.