Acupuncture: what the evidence shows

For chronic low back pain, knee osteoarthritis and migraine, the strongest evidence supports acupuncture as a modest add-on to usual care rather than a replacement for it. Needles used in licensed US practices are sterile and single-use, and a practitioner's licence can be checked in minutes through a state board. Insurance coverage varies, and Medicare now pays for a limited number of acupuncture sessions for chronic low back pain.

What the evidence says for chronic low back pain

Low back pain is the condition with the largest body of acupuncture research, and the results are consistent but easy to misread. Trials that compare real acupuncture with sham acupuncture, where needles are placed shallowly or off the classic points, tend to show small differences between the two. Trials that compare acupuncture plus usual care against usual care alone tend to show a real, if modest, benefit in pain scores and function, usually in the range of one point on a ten-point scale.

That pattern has a practical reading. Much of the effect appears to come from the treatment experience itself, the visit, the attention, the expectation, and the physical sensation of needling, rather than from the precise location of the needles. For a reader weighing options, that does not make acupuncture useless. It means the honest claim is relief that is real but limited, best used alongside exercise, activity and whatever else a clinician has recommended.

Guidelines reflect this. The American College of Physicians lists acupuncture among the nonpharmacologic options for low back pain, and the Centers for Disease Control and Prevention has pointed to non-opioid approaches first for chronic pain. Neither body treats acupuncture as a cure.

A reader who wants the condition-by-condition detail, including how trials are graded and where results are thin, can find it laid out in plain language at acupuncture and complementary care, which covers the same three conditions discussed here.

Does acupuncture help knee osteoarthritis?

Knee osteoarthritis has been studied heavily, and the pattern repeats. Compared with sham, the differences are small and sometimes not statistically significant. Compared with no treatment or with a waiting list, acupuncture produces measurable improvement in pain and in self-reported function for several weeks to a few months.

The effect size matters more than the headline. A typical trial reports a reduction of roughly half a point to one point on a ten-point pain scale, which is noticeable to some patients and not to others. Injections, physical therapy and weight management have their own evidence, and none of these approaches is mutually exclusive.

One caution belongs here. Osteoarthritis of the knee is a structural disease, and needles do not change cartilage. Anyone promising reversal of joint damage is describing something the research does not support.

How are needles made safe?

In licensed US practice, acupuncture needles are sterile, single-use and disposed of after one treatment. They are regulated by the Food and Drug Administration as medical devices, and the FDA classifies them for single use only. A practitioner who reuses needles, or who keeps a supply loose in a drawer rather than in sealed packets opened in front of the patient, is a reason to leave.

The most common side effects are minor: small bruises or bleeding at the insertion site, and mild soreness for a day. Serious complications are rare and are usually linked to poor technique or to unsterile needles. The risks that get less attention are the ones involving what else a patient is taking. Herbal formulas, supplements and some medications can interact, and acupuncture combined with blood thinners or with certain cancer treatments needs to be discussed with the treating physician, not only with the acupuncturist.

Timing around surgery also matters. Some practitioners advise pausing treatment before an operation, and the surgical team should know about any recent sessions.

How does a reader check a practitioner's licence?

Every state that regulates acupuncture has a board or a licensing division, and most publish a searchable database. A licence check takes a few minutes and requires the practitioner's full name and, ideally, the licence number.

A few things are worth confirming. The licence should be current and active, not expired or under restriction. The name on the licence should match the name on the door and the intake form. Credentials such as LAc, licensed acupuncturist, or Dipl. Ac., from the National Certification Commission for Acupuncture and Oriental Medicine, indicate training and examination, but they do not replace a state licence.

A short list of states does not require a licence for acupuncture, and in those places the only protection a patient has is the practitioner's own training and disclosure. Asking directly where someone trained, how long the program was, and whether they carry malpractice insurance is reasonable in any state.

Is acupuncture covered by insurance or Medicare?

Coverage is uneven, and the answer depends on the payer and the diagnosis. Some private plans include acupuncture for specific conditions, often with a referral and a visit limit. Others exclude it entirely. Calling the number on the insurance card and asking three questions, whether acupuncture is covered, for which diagnoses, and how many visits per year, settles the matter faster than reading a plan summary.

Medicare now covers acupuncture for chronic low back pain under a defined benefit, with limits on the number of sessions and requirements about who may perform the treatment and what documentation is needed. The coverage is narrow. It applies to chronic low back pain, not to migraine or knee osteoarthritis, and it does not extend to every provider type.

For anyone paying out of pocket, the cost per session in the US commonly runs from about $75 to $150, with initial visits costing more. Packages sold in advance deserve a second look, particularly when they run into the thousands of dollars and cannot be refunded.

What a first appointment looks like

An initial visit usually runs 60 to 90 minutes and includes a health history, a description of the complaint, and a first round of needling that lasts 20 to 30 minutes. Follow-up visits are shorter.

A few questions are worth asking before the first needle goes in. Which points will be used and why. How many sessions before deciding whether it is working. What signs would mean stopping. Whether the practitioner will coordinate with the primary care physician. A practitioner who answers these plainly, and who does not discourage a patient from continuing conventional care, is behaving the way the field's own guidance describes.

Expectations should stay modest. Acupuncture for these three conditions is a reasonable thing to try, particularly when standard care has plateaued or when medication side effects are a problem. It is not a substitute for diagnosis, and new back pain, a change in headache pattern, or a swollen knee still needs a medical evaluation first.