Is Chiropractic Safe? What the Research Shows

If you are considering seeing a chiropractor for the first time, it is reasonable to ask whether the treatment is safe. It is the kind of question that deserves a straightforward, evidence-based answer rather than reassurance.

Here is what the research tells us — including the parts that are not always discussed openly.

What the evidence says about common side effects

The most frequently reported side effects of spinal manipulation are mild and temporary. These include local soreness at the site of treatment, temporary stiffness, and occasionally a headache following a cervical (neck) adjustment. Research suggests these occur in roughly 30–50% of patients and typically resolve within 24 to 48 hours (Rubinstein et al., BMJ, 2019; Cagnie et al., JMPT, 2004).

These are sometimes described as benign adverse events — the kind of muscle soreness you might experience after exercise you are not used to. For most people, they are mild and short-lived.

Serious adverse events

The question most people are really asking is whether chiropractic treatment can cause serious harm. This is an important question and it deserves an honest answer.

Serious adverse events following spinal manipulation are rare. The most commonly discussed concern is the association between cervical manipulation and vertebral artery dissection, which can lead to stroke. The research on this topic is complex:

• A 2008 case-control study (Cassidy et al., Spine) found that the risk of vertebrobasilar stroke was similar whether patients had visited a chiropractor or a GP in the days before the event — suggesting that people experiencing early stroke symptoms may seek care from either provider, rather than the manipulation causing the stroke.
• A 2016 systematic review (Church et al., JMPT) estimated the rate of serious adverse events following cervical manipulation at approximately 1 per 1–2 million manipulations, though the authors noted that underreporting makes precise estimates difficult.
• The relationship between cervical manipulation and stroke remains debated in the literature. What is not debated is that the risk, whatever its precise magnitude, is very low.

Other rare but reported serious adverse events include cauda equina syndrome following lumbar manipulation (extremely rare) and rib fractures in patients with osteoporosis. Thorough assessment before treatment — including identifying risk factors — is the primary way these events are prevented.

How risk is managed in practice

In Australia, chiropractors are registered health practitioners regulated by AHPRA and the Chiropractic Board of Australia. This means:

• A thorough health history and physical examination before any treatment
• Screening for contraindications — conditions where spinal manipulation would not be appropriate
• Informed consent, which includes discussing what the treatment involves and any relevant risks
• The option to use lower-force techniques where appropriate, particularly for patients who are older, have osteoporosis, or prefer a lower-force approach

At Evolve Chiropractic, informed consent is not a form you sign and forget. It is an ongoing conversation. If anything about your treatment concerns you or does not feel right, you should always feel comfortable saying so — and you can stop at any time.

Putting the risk in context

Every healthcare intervention carries some degree of risk. Non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen — commonly recommended for back and neck pain — carry risks of gastrointestinal bleeding that are well documented. Opioid medications carry risks of dependence. Surgery carries its own risk profile.

The relevant question is not whether chiropractic care is risk-free — no healthcare intervention is — but whether the potential benefits outweigh the potential harms for your particular situation. That is a decision best made with your chiropractor and, where relevant, your GP, based on your individual health history.

Questions worth asking your chiropractor

If you are unsure about safety, here are some questions you might consider asking at your first visit:

• What techniques do you plan to use, and why?
• Are there any risks I should be aware of given my health history?
• Are there alternative approaches if I prefer not to have a particular type of treatment?
• What should I expect to feel during and after the treatment?

A chiropractor who is uncomfortable with these questions is probably not the right fit. Openness about risk is part of good clinical practice.