Chiropractic
Evidence: limited
The core technique, spinal manipulation, gives small short-term improvements in low back pain and neck-related headache, similar in size to exercise and other recommended care. There is no good evidence that chiropractic treats lower-limb running injuries, improves running performance, or affects anything outside the musculoskeletal system, and the traditional ‘subluxation’ theory has no scientific basis. Neck manipulation carries a rare but serious stroke concern.
Not medical advice
This is a general knowledge base, not medical or dietary advice. If you are injured, unwell or weighing up a supplement or a change to your diet, speak to a doctor, physiotherapist or registered dietitian who knows your situation.
Chiropractic is built around spinal manipulation: a high-velocity, low-amplitude thrust applied to a joint, often producing an audible crack. For runners the relevant question is narrow. What does manipulation do for the kind of pain runners get, and is there anything to the broader health claims that some chiropractors attach to it?
How manipulation works, and how it does not
Whatever short-term relief manipulation gives, it is not from realigning a bone that was out of place. The audible crack is the release of gas from the joint fluid, not a bone snapping back into position, and any displacement a manipulation produces is tiny and transient. The better-supported explanation is neurophysiological: a brief reduction in pain sensitivity and muscle guarding around the treated segment. That framing matters because it sets the ceiling on what to expect, a short-term easing of symptoms, not a structural correction that fixes a problem for good.
Spinal manipulation for back pain and headache
The technique itself has a fair evidence base for two things. For low back pain, a meta-analysis of 26 trials found spinal manipulative therapy gave modest improvements in pain and function over the first six weeks, of similar magnitude to other recommended first-line care (Paige et al. 2017); for chronic low back pain a larger review reached the same answer, with small benefits comparable to exercise on low-to-moderate-quality evidence (Rubinstein et al. 2019). For cervicogenic headache (headache arising from the neck), manual therapy including manipulation reduces headache intensity and frequency, again on low-to-moderate-quality evidence with mixed results across trials (cervicogenic headache review 2020). Manipulation is therefore a reasonable option for these problems, on a par with several others rather than better than them. The same evidence underlies the manipulation done by osteopaths and some physiotherapists; the technique is not unique to chiropractic.
The subluxation claim, and the limits
Traditional chiropractic rests on the idea of the ‘vertebral subluxation’: a spinal misalignment held to impede nerve function and cause disease, which manipulation corrects. This model has no sound scientific basis. Claims that go beyond musculoskeletal pain, that chiropractic treats asthma, infant colic, allergies or general wellness, are not supported by evidence, and treatments aimed at them are best declined.
For running specifically, there is no good evidence that chiropractic care prevents or treats lower-limb running injuries, corrects gait in a way that matters (see biomechanics and gait), or improves performance. A runner with mechanical low back pain may get short-term relief from manipulation, the same as from exercise; a runner with an Achilles or knee problem is better served by the loading-based treatment for that injury. As with the rest of the passive therapies, the durable work is done by strength and load management.
Safety: the neck is the real concern
Manipulation of the low back is generally safe, with the common effects being short-lived increased soreness or stiffness (Rubinstein et al. 2019). The serious concern is neck manipulation and stroke. Forcefully rotating the neck has been linked to vertebral artery dissection, a tear in an artery supplying the brain. The best evidence is reassuring on causation but not on prudence: a large population study found vertebrobasilar stroke was associated with chiropractor visits and, to a similar degree, with primary-care visits, which points to people seeking care for the neck pain and headache of a dissection already in progress rather than the manipulation causing it (cervical manipulation and stroke). The event is very rare and causation is unproven, but because a stroke is catastrophic, neck manipulation warrants particular caution and informed consent, and is the one part of this page worth a deliberate conversation with the practitioner.