Chiropractic
Spinal manipulation for back, neck, and joint pain
Evidence grade 3 of 5, Mixed. Read how the Atlas grades evidence.
The specific supported use, spinal manipulation for non-specific acute and chronic low-back pain and some neck pain, earns grade 3: Cochrane reviews and the 2017 American College of Physicians guideline list it as one reasonable option, but effects are small, short-lived, and roughly equal to sham or other active care, with certainty rated low to very low. The founding subluxation theory and claims to treat non-musculoskeletal disease (asthma, infantile colic, immunity) sit at grade 0 to 1, since high-quality RCTs and a 2019 international consensus find no effect beyond placebo. The composite entry grade of 3 is honest for the pain indication that guidelines actually endorse.
- FDA
- Chiropractors are licensed independently in all 50 US states and many countries; the title is regulated, but the underlying spinal manipulation is not an FDA medical product.
- WADA
- Not applicable
Reference only. Not medical advice.
What can go wrong
PROMINENT RISK: Lower-back manipulation is generally low-risk, with mild soreness the usual side effect. The serious concern is NECK (cervical) manipulation, which has been associated with vertebral or carotid artery dissection, a tear in an artery wall that can cause stroke, sometimes in people under 45. Researchers debate whether manipulation causes the tear or whether people with an already-tearing artery seek treatment for the resulting neck pain (so-called protopathic bias). Serious events are rare (estimates range from about 1 per million to a few per 100,000 manipulations), but the outcome can be catastrophic, so cervical thrusts deserve genuine caution and informed consent.
Chiropractic treats pain by manually moving or thrusting on joints, most often the spine, a technique called spinal manipulation. The classic high-velocity, low-amplitude thrust is the audible 'crack' many people picture. The original idea, that misaligned vertebrae called subluxations pinch nerves and cause disease, has not held up scientifically; the body does not work that way. What does have support is narrower: for non-specific low-back pain and some neck pain, manipulation produces small to moderate, usually short-lived improvement, roughly comparable to other active treatments like exercise. An RCT (randomized controlled trial, the strongest test of cause and effect) compares people who get the treatment against those who do not. Dozens of RCTs and several systematic reviews now exist, which is why guidelines often list spinal manipulation as one reasonable option for back pain. The benefit is real but modest, and much of it overlaps with hands-on attention, movement, and expectation.
Spinal adjustment for pain
What people take it for
These are the reasons people give for taking it. They are not effects it has been shown to have.
Safety in detail
Foreground the cervical (neck) manipulation and vertebral or carotid artery dissection stroke association: case reports and case series document real events, sometimes in people under 45, and the scientific debate is about causation versus protopathic bias, not whether the events occur. Serious events are rare (estimates from roughly 1 per million to a few per 100,000 cervical manipulations), but outcomes can be catastrophic, so cervical thrusts warrant genuine caution and informed consent. Lower-back manipulation is generally low-risk with transient soreness. Contraindications include osteoporosis, anticoagulation, acute fracture or instability, and inflammatory or malignant spinal disease.
What people get wrong
Often saidA 'subluxation' is a real misalignment that causes disease throughout the body.
ActuallyThe chiropractic subluxation is not the same as a medically recognized dislocation and has never been shown to cause systemic illness; this founding theory is not supported.
Often saidRegular adjustments keep you healthy and prevent illness.
ActuallyThere is no evidence that maintenance adjustments in healthy people prevent disease; the supported uses are specific musculoskeletal pains.
Often saidThe neck-manipulation stroke risk is a myth invented by critics.
ActuallyCase series and case-control studies document a real association; the open question is causation versus coincidence, not whether the events happen.
Who profits, and who pushes back
Edzard Ernst
Has documented that serious adverse events from spinal manipulation are under-reported and that benefits are often overstated relative to the evidence.
Steven Novella
Argues the subluxation construct is unscientific and that the safest framing treats chiropractic as one modest option for mechanical back pain, not a system of healthcare.
American Chiropractic Association
Sells this. Has a commercial interest in a product sold as this compound, as of July 2026.
Represents the profession; promotes spinal manipulation and contests the strength of the stroke-causation link.
Palmer College of Chiropractic
Sells this. Has a commercial interest in a product sold as this compound, as of July 2026.
Educational and commercial stakeholder in the profession D.D. Palmer founded.
Clinical practice guideline panels (e.g., ACP, NICE)
List spinal manipulation among acceptable options for low-back pain, unpaid academic consensus.
Where the research comes from
Most of the published research on this comes from one place. 55% of it is from North America. Findings that no unrelated group has reproduced are weaker than the study count makes them look.
| Place | Share of published research |
|---|---|
| North America | 55% |
| Europe | 25% |
| Australia/NZ | 10% |
| Asia | 6% |
| Rest of world | 4% |
Research published from: United States.
How we got here
Chiropractic began in 1895 in Davenport, Iowa, when Daniel David (D.D.) Palmer, a magnetic healer, claimed to restore a janitor's hearing by adjusting a spinal vertebra and built from this the theory that misaligned vertebrae, called subluxations, interfere with nerve flow and cause disease. His son B.J. Palmer turned it into a commercial profession that grew through the 20th century despite opposition from organized medicine, culminating in the US antitrust case Wilk v. AMA that chiropractors won in the 1980s. The field split between 'straights' loyal to subluxation theory and 'mixers' who adopted exercise and evidence-based musculoskeletal care, and the modern mainstream now resembles physical therapy, manipulation plus exercise for back and neck pain, with the original disease theory sidelined inside the profession.
Chiropractic began in 1895 when D.D. Palmer, a magnetic healer in Davenport, Iowa, said he restored a janitor's hearing by adjusting a spinal vertebra, and built from this a theory that subluxations interfere with nerve flow and cause disease. His son B.J. Palmer turned it into a commercial movement and a profession that grew through the 20th century despite hostility from organized medicine, including a US antitrust case (Wilk v. AMA) that chiropractors won in the 1980s. Over time the field split between 'straights' loyal to subluxation theory and 'mixers' who adopted exercise, rehabilitation, and evidence-based musculoskeletal care. The modern mainstream iteration looks much more like physical therapy: manipulation plus exercise advice for back and neck pain, with the original disease theory increasingly sidelined inside the profession itself.
- 1895D.D. Palmer performs the first recorded chiropractic adjustment
- 1897Palmer School of Chiropractic founded in Davenport, Iowa
- 1987US court (Wilk v. AMA) finds the AMA had illegally boycotted chiropractors
- 2007Systematic reviews begin consolidating evidence for low-back and neck pain
- 2017American College of Physicians guideline lists spinal manipulation as an option for low-back pain
At a glance
- Originator
- D.D. Palmer, 1895
- Best evidence
- Low-back and neck pain
- Typical effect
- Small to moderate, short-term
- Key safety flag
- Neck manipulation and stroke
What this entry does not yet cover
What follows is unfinished work on our side, not a finding about Chiropractic. A short entry is not a safe entry.
- Cost and market. We have not documented what it sells for or who sells it.
- Supply chain. We have not mapped where it is made.
- Who uses it. We have not documented the user groups.
- What could change. No forward-looking summary yet.
- How it compares. We have not set it against the alternatives.
- Children and teenagers. We have not checked what is known about younger people.
Sources
Spinal manipulative therapy for chronic low-back pain produces only a small, not clinically relevant short-term effect versus other treatments, and is no better than sham for pain or function; certainty is low to very low.
Cochrane Database of Systematic Reviews (de Zoete/Rubinstein, CD008112.pub3, 2026 update)
Original Cochrane review found SMT for chronic low-back pain about as effective as other common therapies such as exercise or usual care, with no serious complications observed and effects that are small and not clinically important.
2017 ACP guideline recommends non-drug options including spinal manipulation for acute/subacute low-back pain, and lists it among many options for chronic low-back pain, rating the manipulation evidence as low quality.
For neck pain, evidence for manipulation and mobilisation is moderate to very low quality; no high-quality superiority over other treatments has been demonstrated, though multiple manipulation sessions beat some medications for acute/subacute neck pain.
Population-based case-control and case-crossover study found visits to a chiropractor and to a primary-care physician carried a similar elevated association with vertebrobasilar stroke before the event, consistent with patients seeking care for dissection-related neck pain (protopathic bias) rather than manipulation proven to cause the dissection.
Cassidy JD et al., Risk of Vertebrobasilar Stroke and Chiropractic Care, Spine 2008 (PubMed)
Systematic review assessing stroke risk from neck manipulation concludes case reports document a real association between cervical manipulation and cervical artery dissection but cannot establish causation.
Assessing the risk of stroke from neck manipulation: a systematic review (PMC3506737)
Systematic review of chiropractic manipulation for paediatric conditions found no evidence of effect for non-musculoskeletal complaints such as asthma and infantile colic.
Spinal manipulation has no effect beyond sham for childhood asthma; high-quality RCTs show it is not superior to sham for non-musculoskeletal disorders.
Cochrane review of SMT for acute low-back pain found it no more effective than inert or sham interventions and comparable to other recommended therapies, with no serious adverse events reported.
ACP news release confirms the guideline positions spinal manipulation among non-pharmacologic first-line options for low-back pain.
American College of Physicians newsroom, guideline for treating nonradicular low back pain