{
  "id": "acupuncture",
  "title": "Acupuncture",
  "lang": "en",
  "source_lang": "en",
  "summary": "Acupuncture is a needle-based therapeutic practice originating in Chinese medicine, studied chiefly for pain and symptom relief.",
  "category": "health",
  "subcategory": "medicine",
  "type": "concept",
  "aliases": [
    "Needle acupuncture",
    "needle therapy"
  ],
  "generated_at": "2026-10-13",
  "model": "pro/gpt-6.1-sol",
  "url": "https://aiwiki.page/en/acupuncture/",
  "translations": {
    "zh-Hans": {
      "url": "https://aiwiki.page/zh/acupuncture/",
      "json": "https://aiwiki.page/zh/acupuncture.json"
    }
  },
  "sections": [
    {
      "heading": "",
      "text": "Acupuncture is a therapeutic practice in which fine needles are inserted into selected sites on the body and may be manipulated manually or stimulated electrically. Originating in traditional Chinese medicine, it is now practised in many countries, both within traditional medical systems and in contemporary clinical settings. Its applications and scientific evaluation have focused particularly on pain and related symptoms. (nccih.nih.gov)\n\nTraditional explanations describe acupuncture through concepts such as qi and channels, usually called meridians. Biomedical research instead investigates responses involving the nervous system, local tissues, and the effects of expectation and the treatment encounter. These explanations require separate treatment: describing a traditional framework does not establish its biological validity, and observing a physiological response does not by itself demonstrate clinical effectiveness. Acupuncture’s mechanisms remain incompletely understood, and evidence of benefit varies by condition and by the treatment used for comparison. (ich.unesco.org)\n\nAcupuncture is also a subject of professional standards, safety regulation, and cultural preservation. The World Health Organization publishes benchmarks for its practice, while acupuncture and moxibustion of traditional Chinese medicine were inscribed on UNESCO’s Representative List of the Intangible Cultural Heritage of Humanity in 2010. Its history, techniques, proposed mechanisms, clinical evidence, and institutional setting are therefore distinct but connected aspects of the subject. (who.int)"
    },
    {
      "heading": "Definition and boundaries of the practice",
      "text": "Needle acupuncture is an intervention in which a practitioner inserts fine needles through the skin for therapeutic purposes. The defining procedure is needle insertion, rather than injection of a drug or other substance. Needles may be stimulated by hand—manual acupuncture—or with small electrical currents—electroacupuncture. These terms identify different methods of stimulation within needle-based treatment; electroacupuncture is not simply electrical stimulation applied to intact skin. The U.S. National Center for Complementary and Integrative Health describes acupuncture as originating in traditional Chinese medicine and now being used in contemporary clinical care, particularly for pain symptoms. Its definition identifies a procedure, not a guarantee of benefit for any particular condition. (nccih.nih.gov)\n\nTraditional Chinese acupuncture and Western medical acupuncture differ principally in their explanatory frameworks and approaches to assessment. Traditional practice interprets illness and point selection through concepts of bodily balance and traditional patterns of disharmony. Western medical acupuncture uses conventional medical diagnosis and interprets needling through contemporary anatomy and physiology, including responses of the nervous system. The British Medical Acupuncture Society uses this distinction in its description of practice. “Western” therefore names a clinical approach, not merely the geographical location of treatment: acupuncture performed in a Western country may still follow a traditional Chinese system. Neither designation, by itself, specifies a complete treatment protocol or establishes clinical effectiveness. (medical-acupuncture.co.uk)\n\nMoxibustion and acupressure may be discussed alongside acupuncture because they can involve the same named bodily sites, but their physical interventions are different. Moxibustion applies heat from burning an herbal material, commonly mugwort; acupressure applies pressure with fingers or mechanical devices without inserting needles. The National Cancer Institute’s broader terminology groups needling, moxibustion, and other point-stimulation methods under acupuncture-related practice, while separately describing their techniques. Consequently, an account of “acupuncture” must identify whether it means needle insertion specifically or a wider family of interventions. A treatment combining needles with heat is not the same intervention as needling alone. (cancer.gov)\n\nDry needling overlaps technically with needle acupuncture but requires explicit identification. “Dry” distinguishes needling without an injected substance from “wet” needling involving injection. In musculoskeletal practice, it commonly targets tender areas or myofascial trigger points and is used in the management of pain and movement impairments. The British Medical Acupuncture Society describes trigger-point acupuncture as synonymous with many uses of dry needling, illustrating the overlap in terminology rather than a universally fixed boundary between the practices. (medical-acupuncture.co.uk)\n\nThe United Kingdom’s NICE guideline on chronic primary pain, published in 2021, explicitly names acupuncture or dry needling within traditional Chinese or Western acupuncture systems. This wording places related interventions within the same recommendation without making their labels interchangeable. Clinical descriptions and research reports therefore need to retain the intervention actually delivered: traditional point-based needling, Western medical acupuncture, trigger-point dry needling, and nonpenetrating pressure or heat treatments cannot be distinguished reliably by the word “acupuncture” alone. (nice.org.uk)"
    },
    {
      "heading": "Historical development and cultural transmission",
      "text": "The Huangdi Neijing (Yellow Emperor’s Inner Canon) is a central early textual source for acupuncture, but its attribution to the legendary Yellow Emperor does not establish either an author or an invention date. The received corpus comprises the Suwen (Basic Questions) and Lingshu (Spiritual Pivot), assembled and transmitted through successive textual layers. A Han imperial-library survey begun in 26 BCE recorded a work bearing the title Huangdi Neijing; that bibliographical entry is not equivalent to a surviving copy of the present text. Scholarly dating distinguishes the composition of individual passages, the formation of collections, and later editorial revisions. Archaeological discoveries have also challenged older assignments of the whole corpus to the Warring States period, 475–221 BCE. These distinctions preclude treating a conventional date such as “100 BCE” as the precise moment acupuncture was invented. (historiamedica.org)\n\nThe canon documents the organization of medical knowledge rather than a single founding event. In a 2024 historical study, Shujian Zhang examined how its acupuncture-point knowledge developed through observation, recording, naming, and classification. This approach treats descriptions of the body and treatment sites as historically constructed categories within traditional Chinese medicine, not simply as an unchanged inheritance from a legendary ruler. The textual tradition therefore provides evidence for the articulation and transmission of acupuncture theory, while leaving the beginnings of particular needling practices a separate historical question. (pubmed.ncbi.nlm.nih.gov)\n\nTransmission beyond China involved both the movement of texts and local institutional adaptation. Records discussed in histories of Japanese acupuncture identify the arrival of Chinese medical books, including acupuncture material, in Japan in 562. Japan’s medical code of 701 specified acupuncture teachers, practitioners, and students, together with training and examination arrangements. In 984, the court physician Tamba Yasuyori presented the Ishinpō, which reorganized material from Chinese medical sources for a Japanese readership. European knowledge subsequently developed through missionary and commercial contacts in East Asia. Dutch physician Willem ten Rhijne gathered information in Japan during 1674–1676 and published his Latin account, De acupunctura, in 1683. These examples show dissemination through translation, compilation, and professional exchange rather than the uniform reproduction of one practice. (pmc.ncbi.nlm.nih.gov)\n\nWithin practitioner communities, transmission has combined oral instruction with demonstration: teachers explain treatment principles while showing practical skills to disciples. UNESCO’s description identifies master–disciple relationships and transmission within families or clans, alongside subsequent formal academic education. Apprenticeship and institutional teaching thus represent overlapping channels of continuity. International circulation long preceded the twentieth century, but the U.S. National Center for Complementary and Integrative Health identifies the 1970s as the period from which acupuncture gained worldwide popularity. That expansion describes historical reception, not evidence of effectiveness for any particular condition. (ich.unesco.org)\n\nIn 2010, UNESCO inscribed “Acupuncture and moxibustion of traditional Chinese medicine,” nominated by China, on the Representative List of the Intangible Cultural Heritage of Humanity. The inscription jointly concerns needle acupuncture and moxibustion, although they are distinct interventions. Its scope includes associated knowledge, skills, and modes of transmission, rather than acupuncture considered solely as a clinical procedure. Recognition under this cultural-heritage framework concerns safeguarding a living tradition; it is not a certification of therapeutic efficacy or a condition-specific clinical recommendation. (ich.unesco.org)"
    },
    {
      "heading": "Traditional concepts and acupuncture-point nomenclature",
      "text": "Within traditional Chinese medicine, acupuncture is explained through concepts of qi, channels, and bodily balance. Qi is traditionally understood as a vital influence or energy involved in maintaining health, rather than as a quantity defined and measured in modern physics. Channels, commonly translated as meridians, are the pathways through which qi is said to circulate. Health is associated with harmonious functioning, including balance between the complementary forces of yin and yang; illness is interpreted through disturbances in that harmony. These concepts belong to a traditional explanatory framework, not to established anatomical structures or demonstrated physiological pathways. NCCIH distinguishes the historical interpretation of these theories from scientific investigation of particular treatments. (files.nccih.nih.gov)\n\nTraditional point selection connects an individual’s condition with this channel-and-balance framework. Practitioners choose sites understood to influence the relevant channels, with the intended purpose of restoring balance and supporting the body’s self-regulating functions. UNESCO’s description specifically identifies treatment selection according to the individual condition, rather than a single uniform intervention for every patient. In this context, an acupuncture point is a designated treatment site within a traditional map of the body. Describing the site and the rationale for selecting it records how the practice is understood; it does not, by itself, establish that the proposed channel exists or that treatment produces the intended clinical effect. (ich.unesco.org)\n\nThe World Health Organization developed standardized nomenclature to reduce communication difficulties arising from different pronunciations, spellings, and coding systems. A WHO scientific group met in Geneva from 30 October to 3 November 1989; its recommendations appeared in a 1990 memorandum. The system identifies 361 classical points organized under 14 main meridians. Each point’s designation combines an alphanumeric code, its Chinese name transliterated into the phonetic alphabet Pinyin, and its name in Han characters. The alphabetic component identifies the meridian, while the number places the point in the agreed sequence along that meridian. These codes are identifiers, not measurements of biological activity or rankings of therapeutic importance. (iris.who.int)\n\nWHO’s Standard acupuncture nomenclature: a brief explanation of 361 classical acupuncture point names and their multilingual comparative list complements the coding system by relating classical Chinese names to terminology used across languages. Retaining Chinese characters helps preserve the identity of a name despite differences in pronunciation; Pinyin provides a standardized romanized form, while the alphanumeric designation permits concise international reference. The multilingual presentation therefore allows teaching materials, clinical descriptions, and research reports to refer to the same named point without requiring identical local pronunciation or spelling. (who.int)\n\nPC6, also called Neiguan, illustrates this distinction between identifying a point and evaluating an intervention. Cochrane uses both names for a wrist-region point studied in preventing nausea and vomiting after surgery. Its 2025 review distinguishes invasive stimulation, such as needle acupuncture, from noninvasive methods, such as acupressure wristbands, even though both target PC6. The shared point name identifies the intended site; it does not make these procedures interchangeable. Standardized nomenclature supplies a common vocabulary, whereas effectiveness must be assessed for the particular stimulation method, clinical condition, comparator, and outcome studied. (cochrane.org)"
    },
    {
      "heading": "Instruments, treatment procedures, and technical variation",
      "text": "Needle acupuncture uses fine needles inserted through the skin; stimulation may be manual or electrical. In manual treatment, the practitioner manipulates the needles, whereas electroacupuncture applies small electrical currents through them. These are distinct intervention variants, not interchangeable descriptions of one uniform procedure. Electrical stimulation adds equipment and stimulation parameters to the treatment protocol. The U.S. National Center for Complementary and Integrative Health describes both forms; its safety information also notes that U.S. acupuncture needles are regulated as medical devices requiring sterility and single-use labeling. (nccih.nih.gov)\n\nThe World Health Organization’s practice benchmarks, listed on its website on May 16, 2021, organize treatment around procedures, facilities, and safety. Their documentation requirements place needling within a clinical encounter rather than treating it as an isolated technical act. Records include the chief complaint, medical history, physical examination, diagnostic assessment, therapeutic principle, proposed acupuncture treatment, and patient consent. They also include needling details, the patient’s response, outcomes, incidents, and follow-up information. Within traditional practice, the diagnostic record may include pattern differentiation. Complete patient records are to be maintained according to applicable local requirements, linking assessment, intervention, and subsequent observations in a documented sequence. (who.int)\n\nService requirements extend beyond the needles. WHO specifies a clean treatment environment with suitable lighting, temperature, and ventilation, provision for patient privacy, appropriate storage for needles and related devices, and access for disabled patients. Preparation includes checking needle condition and selecting instruments in relation to the patient and treatment site. These requirements concern the organization and delivery of care; they do not prescribe a single point combination or a universal treatment schedule. (who.int)\n\nTechnical descriptions must identify point selection, unilateral or bilateral treatment, needle number and type, stimulation method, retention time, session frequency, total sessions, and practitioner qualifications and experience. Retention time means the interval between insertion and removal, not the entire appointment. Protocols may be fixed, partly individualized, or fully individualized: a partly individualized protocol, for example, combines mandatory points with optional selections. Reporting planned treatment alongside what patients actually received supports reproducibility. These details appear in the 2010 STRICTA checklist’s six items and 17 sub-items, developed by Hugh MacPherson and colleagues. (journals.plos.org)\n\nCombined treatments require separate description. STRICTA distinguishes accompanying components—such as moxibustion, cupping, herbs, exercise, or lifestyle advice—from co-interventions supplied to both study groups. This distinction matters for causal inference: a comparison of a combined treatment package with usual care does not isolate the contribution of needling alone. Reports therefore need to specify what accompanied acupuncture and what each comparator group received, so that findings are attributed to the intervention actually studied rather than to the label “acupuncture.” (journals.plos.org)"
    },
    {
      "heading": "Biomedical mechanisms and contextual effects",
      "text": "Biomedical research distinguishes responses to needle stimulation from changes associated with the circumstances of treatment. The former include alterations in nervous-system activity and local tissue mechanics; the latter include effects associated with expectations, prior experience, and practitioner–patient interaction. These processes may operate together rather than constitute competing explanations. No complete mechanism accounts for all reported effects of acupuncture, and demonstrating a physiological response does not establish that the response produces a clinically important benefit for a particular condition. (nccih.nih.gov)\n\nSensory-stimulation studies examine how needling is processed within the central nervous system. In a 2005 investigation, Kathleen K. S. Hui and colleagues used functional magnetic resonance imaging to study manual acupuncture at ST36, or Zusanli. They observed changes in signals across cerebral, limbic, brainstem, and cerebellar regions. The direction of the response depended on participants’ sensations: the composite aching and heaviness traditionally termed deqi was associated with reduced signal intensity in several regions, whereas accompanying sharp pain produced a different pattern, predominantly signal increases. Tactile control stimulation also elicited responses. Such findings document sensory-dependent brain activity; the proposal that this activity mediates therapeutic effects remains a mechanistic hypothesis rather than a clinical outcome demonstrated by the scan. (pubmed.ncbi.nlm.nih.gov)\n\nLocal tissue research has quantified the mechanical interaction between needles and connective tissue. In 2001, Helene M. Langevin and colleagues measured “needle grasp”—the resistance encountered when withdrawing a needle—in 60 human participants. Mean withdrawal force increased by 167 percent after unidirectional rotation and 52 percent after bidirectional rotation, compared with no rotation. Related work proposed that tissue winding around the needle transmits mechanical forces to resident cells, potentially converting deformation into biochemical signals. The withdrawal-force experiment established a measurable biomechanical event, but explicitly did not establish a causal relationship between that event and therapeutic benefit. (journals.physiology.org) A separate molecular investigation by Nanna Goldman and colleagues, published in 2010, found that local suppression of pain-related responses in mice required expression of adenosine \\(A_1\\) receptors. This identified a pathway in an animal model, not a comprehensive explanation of human acupuncture outcomes. (pmc.ncbi.nlm.nih.gov)\n\nContextual effects concern aspects of the encounter that are not specific to needle penetration. Expectations, remembered relief, attention, and the therapeutic relationship can contribute to changes in symptom experience. (nccih.nih.gov) Ted J. Kaptchuk and colleagues investigated these components in a 2008 randomized controlled trial involving 262 adults with irritable bowel syndrome. Participants initially received observation alone, placebo acupuncture with limited practitioner interaction, or placebo acupuncture accompanied by warmth, attention, and expressed confidence. The study found incremental improvement as components were combined, illustrating that the interpersonal setting can influence outcomes even when the needling procedure is simulated. Its subject was the treatment context, not proof of a needle-specific mechanism. (pubmed.ncbi.nlm.nih.gov)\n\nPrior experience has also been investigated through imagined treatment. A study published in 2019 recruited 27 healthy participants for a randomized crossover experiment comparing real acupuncture, sham acupuncture, video-guided acupuncture imagery, and an imagery control. Watching a recording of acupuncture previously administered to their own body while imagining its reapplication increased pain thresholds relative to the imagery control; real acupuncture also increased thresholds relative to sham. The two interventions produced different imaging patterns. These observations support investigation of learned and imagery-related modulation of pain, but changes in experimental pain thresholds in healthy volunteers do not independently demonstrate lasting relief of a clinical disorder. Likewise, brain-imaging differences identify responses associated with an intervention, not by themselves a causal pathway or condition-specific therapeutic benefit. (pubmed.ncbi.nlm.nih.gov)"
    },
    {
      "heading": "Clinical evidence for pain-related conditions",
      "text": "A 2018 individual-patient-data meta-analysis by Andrew Vickers and colleagues combined 39 randomized controlled trials involving 20,827 participants with chronic musculoskeletal pain, osteoarthritis, or chronic headache. Differences in pain and function averaged approximately 0.5 standard deviations against no-acupuncture controls and 0.2 against sham acupuncture. These are between-group effect sizes, not the proportion of patients whose pain disappeared. The larger difference against no acupuncture includes contextual effects and differences in accompanying care; the smaller sham-controlled difference estimates benefit beyond the simulated procedure. Across the pooled conditions, the treatment effect diminished by approximately 15% at one year, although that aggregate does not establish equal durability for every condition. (pubmed.ncbi.nlm.nih.gov)\n\nFor chronic nonspecific low-back pain, a 2020 Cochrane review found low-certainty evidence of an immediate pain reduction of 9.22 points on a 100-point scale compared with sham acupuncture, below its threshold for clinically important improvement. Against no treatment, the reduction was 20.32 points, with moderate-certainty evidence and improved back-specific function. Against usual care, the pain difference was 10.26 points, again below the clinical-importance threshold, although functional outcomes improved. A 2025 Cochrane overview characterized functional benefits against sham and usual care as slight. Acute low-back pain has a separate, less certain evidence base: NCCIH reports that evidence assessed for the American College of Physicians’ 2017 guideline was low quality, compared with moderate quality for chronic presentations. (doi.org)\n\nNeck-pain findings should likewise distinguish acute presentations from persistent symptoms. A 2024 systematic review of chronic neck pain found that acupuncture added to other treatment could provide pain relief lasting at least three months after treatment, but did not show superior sustained pain relief against sham; functional impairment could improve beyond three months. These findings concern chronic neck pain rather than demonstrating effectiveness for acute injury-related pain. A broader review published in 2025 included 26 trials and 3,520 participants, reporting advantages over pooled inactive comparators, but rated evidence from very low to moderate certainty and identified substantial heterogeneity. Its inactive category combined sham procedures, waiting lists, and no intervention, limiting interpretation as a specifically sham-controlled effect. (pmc.ncbi.nlm.nih.gov)\n\nFor osteoarthritis, the evidence is concentrated in the knee. A Cochrane review of 16 trials involving 3,498 participants included 12 knee-only studies, three hip-only studies, and one mixed study. Short-term advantages over sham amounted to 0.9 points on a 20-point pain scale and 2.7 points on a 68-point functional scale, below the review’s predefined clinical-relevance thresholds. At six months, differences had narrowed to approximately 0.4 and 1.2 points, respectively. Waiting-list comparisons produced larger benefits. Hip evidence is less extensive: a separate 2018 review found little or no pain difference against sham in two trials. Knee findings therefore cannot establish equivalent effects in the hip or hand, and these symptom outcomes do not demonstrate reversal of joint degeneration. (cochrane.org)\n\nMigraine prevention and tension-type headache research primarily measures headache frequency rather than immediate analgesia. Klaus Linde and colleagues’ 2016 Cochrane migraine review included 22 trials and 4,985 participants, with moderate-quality evidence. Headache frequency fell by at least half in 41% receiving acupuncture versus 17% receiving no acupuncture, and in 50% versus 41% in sham-controlled comparisons; the small sham-controlled advantage persisted at six months. Comparisons with preventive drugs showed no statistically significant frequency advantage at follow-up. The separate tension-type headache review included 12 trials and 2,349 adults: approximately 51% receiving acupuncture versus 43% receiving sham achieved at least a 50% frequency reduction, with similar findings at six months. Evidence was moderate to low quality, and comparisons with exercise, massage, or physiotherapy were insufficiently reported to establish superiority. (cochrane.org)\n\nPostoperative pain and medication-associated joint pain are distinct applications. A 2016 postoperative review found reduced first-day pain, but pooled needle acupuncture with noninvasive electrical stimulation; needle-based subgroups did not demonstrate reduced opioid consumption. In Dawn Hershman and colleagues’ 2018 trial of 226 women receiving aromatase inhibitors for early-stage breast cancer, acupuncture reduced worst joint-pain scores at six weeks by an adjusted 0.92 points versus sham and 0.96 versus waiting-list control on a 0–10 scale. The investigators considered the clinical importance uncertain. These endpoints concern treatment-related symptoms, not cancer control or the underlying reason for surgery. (pubmed.ncbi.nlm.nih.gov)"
    },
    {
      "heading": "Evidence for non-pain symptoms and other applications",
      "text": "Research on postoperative nausea and vomiting frequently examines stimulation of PC6, or Neiguan, at the wrist rather than needle acupuncture exclusively. A Cochrane review by Anna Lee and colleagues, published on 12 September 2025 and searched through 6 June 2025, included 77 randomized controlled trials involving 9,847 participants; the trials were conducted between 1986 and 2022. Its analyses distinguished invasive stimulation, including needle acupuncture, from noninvasive interventions such as pressure wristbands and stimulation through skin electrodes. These categories also remained separate from stimulation combined with antiemetic medication. A finding for noninvasive PC6 stimulation therefore does not establish the effectiveness of inserted needles, or vice versa. (pubmed.ncbi.nlm.nih.gov)\n\nThe review’s 2015 predecessor illustrates why outcomes and comparators require separate reporting. Across different subsets of its 59 trials, pooled PC6 stimulation reduced nausea relative to sham treatment (risk ratio 0.68; 95% confidence interval 0.60–0.77), vomiting (0.60; 0.51–0.71), and use of rescue antiemetics (0.64; 0.55–0.73); certainty was low. When stimulation plus medication was compared with medication alone, vomiting and rescue-medication use were reduced, but the nausea estimate remained uncertain: 0.79, with a confidence interval of 0.55–1.13. These pooled estimates combined stimulation techniques and were not needle-specific results. (cochrane.org)\n\nThe 2025 network meta-analysis separated broad intervention categories and combined direct comparisons with indirect comparisons through shared controls. For postoperative nausea, invasive PC6 stimulation combined with antiemetics had an estimated risk ratio of 0.21 against sham (95% confidence interval 0.10–0.45), with moderate confidence, but this particular estimate came entirely from indirect evidence. It describes a combined intervention against sham, not the incremental benefit of adding needling to medication. The review also found that noninvasive stimulation combined with antiemetics probably reduced subsequent rescue-medication use. Nausea incidence, vomiting incidence, and failure of initial prevention requiring additional medication were distinct endpoints. (pubmed.ncbi.nlm.nih.gov)\n\nIrritable bowel syndrome provides a contrasting example. A 2019 meta-analysis by Haizhen Zheng and colleagues included 41 trials with 3,440 participants, eight of which used sham acupuncture controls. Acupuncture did not significantly outperform sham on overall symptom scores: the standardized mean difference was 0.18 (95% confidence interval −0.26 to 0.63). Nor was there a significant difference in quality of life (−0.10; −0.31 to 0.11). A pooled responder-rate advantage was not sustained in sensitivity analysis. In contrast, studies adding acupuncture to medication, Chinese medicines, or tuina reported better response rates than the accompanying intervention alone, although results were heterogeneous. Such comparisons assess an added treatment encounter rather than demonstrating a specific effect of needling beyond sham. (pmc.ncbi.nlm.nih.gov)\n\nLimitations differ between these evidence bases. The irritable-bowel-syndrome review averaged only 84 participants per trial, and its sham-controlled courses ranged from three to ten weeks. In the postoperative review, surgical populations, stimulation duration, and outcome-assessment times varied; selective reporting was an important source of bias. Participants were predominantly adults from middle- and high-income countries, leaving children and low-income settings less well represented. Evidence concerning postoperative symptoms consequently cannot be transferred automatically to childhood populations, chronic gastrointestinal symptoms, or other causes of nausea. For cancer-treatment-related nausea and vomiting, NCCIH likewise notes that much supporting research predates contemporary antiemetic regimens, leaving the additional benefit alongside current standard treatment uncertain. (pmc.ncbi.nlm.nih.gov)"
    },
    {
      "heading": "Adverse effects and patient safety",
      "text": "Reported adverse effects range from minor local reactions to uncommon but serious injuries. Minor events include bleeding, bruising, and pain at the needle site; these differ clinically from complications involving infection or damage to internal structures. Safety estimates depend on whether investigators count individual treatments, patients receiving a course, or particular types of event. A 2021 systematic review of 21 prospective studies, covering approximately 12.9 million treatments, estimated that 9.31% of patients experienced at least one adverse event during a treatment series, with a 95% confidence interval of 5.10–14.62%. The pooled estimate for serious adverse events was 1.01 per 10,000 patients receiving a series, or 7.98 per million treatments. These are separate estimates with different denominators, not interchangeable measures of an individual’s risk. Substantial variation between studies limits their precision and generalizability; incomplete reporting cannot establish that an unreported complication never occurs. (nccih.nih.gov)\n\nNonsterile needles and improper treatment delivery are documented sources of complications. Needle penetration breaches the skin barrier, making contamination relevant to infection risk. Serious mechanical injuries include punctured organs, collapsed lungs, and injury to the central nervous system. These complications differ from ordinary superficial bleeding or bruising in both the structures affected and their potential consequences. The U.S. National Center for Complementary and Integrative Health also identifies patients undergoing chemotherapy or radiation therapy as a group for whom infection prevention is particularly important because treatment can weaken immune defenses. The relative rarity of published serious complications does not remove the need for anatomical competence and infection-control safeguards. (nccih.nih.gov)\n\nSterile, single-use needles are a central equipment safeguard. In the United States, the Food and Drug Administration regulates acupuncture needles as medical devices and requires sterility and labeling for single use only. Under 21 CFR § 880.5580, they are Class II devices subject to special controls addressing single-use labeling, prescription-device requirements, material biocompatibility, and sterility. The FDA’s classification database identifies single-use acupuncture needles under product code MQX. These requirements concern the device and its authorized supply and use; they do not constitute evidence that acupuncture is effective for every condition for which it is offered. Device sterility also does not address the separate possibility of injury from improper delivery. (nccih.nih.gov)\n\nThe World Health Organization’s WHO benchmarks for the practice of acupuncture, made available on its publications website on May 16, 2021, frames patient safety as an institutional responsibility extending beyond the needle itself. Its clinical-procedure framework covers preparation, treatment techniques, and records; its facility requirements address physical space, equipment and devices, and waste management. Dedicated safety sections cover precautions, contraindications, infection prevention and control, and incident management, with annexes on disinfection requirements and responses to treatment incidents. This structure places safe delivery within a system of suitable premises, documented clinical encounters, contamination control, and organized responses when complications arise. The benchmarks provide a reference against which services can be evaluated by policymakers, health workers, and education providers; they are professional service standards rather than instructions for self-treatment. (who.int)"
    },
    {
      "heading": "Clinical-trial design and interpretation",
      "text": "In a randomized controlled trial, participants are assigned by chance to acupuncture or a comparator, reducing systematic differences in prognosis between groups. The comparator determines the question answered. Sham-controlled trials estimate the additional effect of the specified acupuncture protocol over a simulated procedure; no-acupuncture or waiting-list controls estimate the effect of receiving the treatment package, including clinical attention and expectations. Comparing acupuncture plus usual care with usual care alone tests its incremental contribution, whereas comparison with an active treatment, such as physiotherapy, assesses relative outcomes between therapeutic alternatives. Explanatory trials emphasize efficacy under controlled conditions; pragmatic trials emphasize effectiveness in routine care. Neither design answers all these questions simultaneously, and improvement within an acupuncture group is not itself evidence of superiority over its comparator. (bmj.com)\n\nSham procedures include devices that touch the skin without penetrating it and needle insertion away from the designated acupuncture points. Such controls can reproduce parts of the treatment ritual, but they are not necessarily physiologically inert: skin contact or needling may generate sensory and local tissue responses. A small difference between acupuncture and sham therefore measures the contrast between two particular procedures, rather than automatically establishing that all needling effects are absent. Conversely, superiority over no acupuncture does not isolate point selection or needle penetration from contextual effects. NCCIH reports that benefits in many studies have been larger against no treatment than against sham, a pattern consistent with a contribution from nonspecific effects. The credibility of the sham and differences in practitioner interaction also affect interpretation. (nccih.nih.gov)\n\nReliable randomization requires both an unpredictable assignment sequence and allocation concealment: recruiters must not know the next assignment before enrolling a participant. Concealment differs from blinding, which operates after assignment. Acupuncture practitioners generally know which procedure they deliver, although participants, outcome assessors, and analysts may be blinded. Knowledge of assignment can influence treatment interactions or subjective symptom reporting. Attrition creates uncertainty when missing outcomes differ between groups; selective reporting arises when published outcomes or assessment times depart from those prespecified in the protocol. Registration, accessible protocols, participant-flow diagrams, and explicit accounts of missing-data handling make these problems assessable. Intervention heterogeneity adds another limitation: a Cochrane review with searches through June 6, 2025, identified 77 studies involving 9,847 participants in postoperative PC6 stimulation research, but reported generally low confidence because of variable study quality, surgical populations, treatment duration, and assessment timing. Its inclusion of both invasive and noninvasive stimulation also limits interpretation as evidence about needle acupuncture alone. (bmj.com)\n\nThe 2010 revision of STRICTA—Standards for Reporting Interventions in Clinical Trials of Acupuncture—was published by Hugh MacPherson, Douglas Altman, and colleagues as an official extension of CONSORT, the Consolidated Standards of Reporting Trials. Its six items comprise 17 sub-items covering treatment rationale, needling details, treatment regimen, accompanying interventions, practitioner background, and control or comparator procedures. Reporting point selection, stimulation method, needle-retention time, session frequency, and permitted individualization enables readers to identify what was actually tested and supports reproducibility. Equivalent detail is required for the comparator. STRICTA is a reporting framework, not a guarantee of sound methods or clinical benefit. (journals.plos.org)\n\nStatistical significance must be distinguished from clinically meaningful improvement by examining the effect size, its confidence interval, and a justified clinical threshold. In Dawn Hershman and colleagues’ 2018 trial of 226 women with aromatase-inhibitor-associated joint pain, the adjusted six-week difference between acupuncture and sham was 0.92 points on a 0–10 pain scale, with a 95% confidence interval of 0.20–1.65 and \\(P=.01\\). The investigators had specified a two-point between-group difference as clinically meaningful; the statistically significant result therefore did not meet that prespecified magnitude. Their interpretation described the clinical importance as uncertain. This example also distinguishes the between-group treatment effect from the larger improvement measured within the acupuncture group itself. (pmc.ncbi.nlm.nih.gov)"
    },
    {
      "heading": "Professional regulation and health-system integration",
      "text": "Professional authorization to practise acupuncture depends on jurisdiction and professional background. In the United States, state requirements provide distinct routes rather than a single national licensing model. California’s approved-program route requires at least 3,000 hours of theoretical and clinical training and passage of the state’s written examination; passing a national certification examination alone does not qualify an applicant for California licensure. New York requires at least 60 semester hours of preprofessional college education, including nine in biosciences, followed by an approved professional acupuncture programme or its equivalent and specified examinations. Its equivalency criteria include 650 hours of supervised clinical experience. New York also provides a separate certification route for licensed physicians and dentists. These differences concern legal authorization and education requirements, not evidence that one jurisdiction’s practitioners achieve superior clinical outcomes. (acupuncture.ca.gov)\n\nThe World Health Organization published its WHO benchmarks for the practice of acupuncture on 16 May 2021 as a reference for policymakers, healthcare workers, education providers, and the public. The document describes the administration of treatment, minimum infrastructure for an acupuncture service, and elements of safe practice. Its institutional function is to provide criteria against which services can be evaluated and to support countries developing practice requirements. Such benchmarks address how a service is organized and delivered; they are not condition-specific clinical guidelines determining whether acupuncture should be offered for a particular diagnosis. (who.int)\n\nClinical guidelines can reach different recommendations because their diagnostic scope and resource assumptions differ. In its 2021 guideline NG193, the United Kingdom’s National Institute for Health and Care Excellence (NICE) permits consideration of a single course of acupuncture or, explicitly, dry needling for chronic primary pain in people aged 16 years and over. The specified model uses a community setting, an appropriately trained healthcare professional at band 7 or equivalent or lower, and no more than five hours of professional time; alternative staffing or settings must have equivalent or lower costs. NICE’s separate guideline NG59, however, states that acupuncture should not be offered for low-back pain with or without sciatica, a recommendation dated 2016. The chronic-primary-pain recommendation therefore does not constitute a general endorsement for every chronic painful condition. (nice.org.uk)\n\nInsurance reimbursement introduces another set of eligibility rules. Effective 21 January 2020, U.S. Medicare introduced coverage for acupuncture for chronic low-back pain lasting at least 12 weeks, without an identifiable systemic cause and not associated with surgery or pregnancy. The national coverage determination allows up to 12 visits within 90 days and eight additional sessions when improvement is demonstrated, with a maximum of 20 treatments annually; treatment must stop if improvement is absent or symptoms regress. It also specifies practitioner qualifications and supervision requirements, illustrating that state authorization alone does not determine reimbursement eligibility. (cms.gov) In U.S. Medical Expenditure Panel Survey data, the proportion of adult acupuncturist visits with any insurance coverage increased from 41.1 percent in 2010–2011 to 50.2 percent in 2018–2019. These are visit-level coverage figures, not percentages of adults entitled to treatment. (nccih.nih.gov)\n\nUtilization statistics describe uptake within a health system, rather than therapeutic effectiveness. National Health Interview Survey estimates reported by the U.S. National Center for Complementary and Integrative Health indicate that 1.0 percent of U.S. adults used acupuncture in 2002, compared with 2.2 percent in 2022. The denominator is the adult population, not patients with a particular pain condition or people receiving reimbursed care. Neither increased use nor expanded reimbursement measures treatment benefit; those questions require condition-specific clinical evidence rather than service-utilization counts. (nccih.nih.gov)"
    }
  ],
  "links": [
    "traditional-chinese-medicine",
    "pain",
    "nervous-system",
    "world-health-organization",
    "unesco",
    "diagnosis",
    "anatomy",
    "physiology",
    "moxibustion",
    "united-kingdom",
    "huangdi-neijing",
    "china",
    "oral-tradition",
    "education",
    "intangible-cultural-heritage",
    "nausea",
    "surgery",
    "reproducibility",
    "causal-inference",
    "central-nervous-system",
    "magnetic-resonance-imaging",
    "randomized-controlled-trial",
    "effect-size",
    "low-back-pain",
    "osteoarthritis",
    "migraine",
    "headache",
    "physical-therapy",
    "joint-pain",
    "breast-cancer",
    "confidence-interval",
    "quality-of-life",
    "infectious-disease",
    "united-states",
    "randomization",
    "statistical-hypothesis-testing",
    "insurance",
    "health-system"
  ],
  "sources": [
    {
      "title": "Acupuncture: Effectiveness and Safety",
      "url": "https://www.nccih.nih.gov/health/acupuncture-effectiveness-and-safety"
    },
    {
      "title": "Commissioning",
      "url": "https://www.medical-acupuncture.co.uk/Professionals/Commissioningguidance.aspx"
    },
    {
      "title": "Acupuncture (PDQ®)–Health Professional Version",
      "url": "https://www.cancer.gov/about-cancer/treatment/cam/hp/acupuncture-pdq"
    },
    {
      "title": "Considering Providing Dry Needling Services?",
      "url": "https://www.apta.org/apta-magazine/archive/2021/03/01/apta-magazine-march-2021/considering-providing-dry-needling-services"
    },
    {
      "title": "Recommendations: Chronic pain (primary and secondary) in over 16s",
      "url": "https://www.nice.org.uk/guidance/ng193/chapter/recommendations"
    },
    {
      "title": "Huangdi Neijing",
      "url": "https://www.historiamedica.org/sources/huangdi-neijing/"
    },
    {
      "title": "But is it [History of] Medicine? Twenty Years in the History of the Healing Arts of China",
      "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC3304084/"
    },
    {
      "title": "Acupuncture theory in Huangdi Neijing and launching the natural history of body",
      "url": "https://pubmed.ncbi.nlm.nih.gov/38764112/"
    },
    {
      "title": "History and Progress of Japanese Acupuncture",
      "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC2887322/"
    },
    {
      "title": "Acupuncture and moxibustion of traditional Chinese medicine - UNESCO Intangible Cultural Heritage",
      "url": "https://ich.unesco.org/en/RL/acupuncture-and-moxibustion-of-traditional-chinese-medicine-00425?lang=en"
    },
    {
      "title": "Traditional Chinese Medicine",
      "url": "https://files.nccih.nih.gov/s3fs-public/Traditional_Chinese_Medicine_08-03-2015.pdf"
    },
    {
      "title": "A standard international acupuncture nomenclature: Memorandum from a WHO meeting",
      "url": "https://iris.who.int/bitstream/handle/10665/261334/PMC2393122.pdf?sequence=1"
    },
    {
      "title": "Standard acupuncture nomenclature: a brief explanation of 361 classical acupuncture point names and their multilingual comparative list",
      "url": "https://www.who.int/publications/i/item/9290611057"
    },
    {
      "title": "What are the benefits and risks of different wrist PC6 acupoint stimulation techniques for preventing nausea and vomiting after an operation?",
      "url": "https://www.cochrane.org/evidence/CD003281_what-are-benefits-and-risks-different-wrist-pc6-acupoint-stimulation-techniques-preventing-nausea"
    },
    {
      "title": "WHO benchmarks for the practice of acupuncture",
      "url": "https://www.who.int/publications/i/item/978-92-4-001688-0"
    },
    {
      "title": "W.H.O Benchmarks For The Practice of Acupuncture",
      "url": "https://www.scribd.com/document/529333332/W-H-O-Benchmarks-for-the-Practice-of-Acupuncture"
    },
    {
      "title": "Revised STandards for Reporting Interventions in Clinical Trials of Acupuncture (STRICTA): Extending the CONSORT Statement",
      "url": "https://journals.plos.org/plosmedicine/article?id=10.1371%2Fjournal.pmed.1000261"
    },
    {
      "title": "The integrated response of the human cerebro-cerebellar and limbic systems to acupuncture stimulation at ST 36 as evidenced by fMRI",
      "url": "https://pubmed.ncbi.nlm.nih.gov/16046146/"
    },
    {
      "title": "Adenosine A1 receptors mediate local anti-nociceptive effects of acupuncture",
      "url": "https://pmc.ncbi.nlm.nih.gov/articles/3467968/"
    },
    {
      "title": "Components of placebo effect: randomised controlled trial in patients with irritable bowel syndrome",
      "url": "https://pubmed.ncbi.nlm.nih.gov/18390493/"
    },
    {
      "title": "Analgesic Effects Evoked by Real and Imagined Acupuncture: A Neuroimaging Study",
      "url": "https://pubmed.ncbi.nlm.nih.gov/30137262/"
    },
    {
      "title": "Acupuncture for Chronic Pain: Update of an Individual Patient Data Meta-Analysis",
      "url": "https://pubmed.ncbi.nlm.nih.gov/29198932/?dopt=Abstract"
    },
    {
      "title": "What are the likely benefits and harms of non-medicine and non-surgical treatments for non-specific low back pain?",
      "url": "https://www.cochrane.org/evidence/CD014691_what-are-likely-benefits-and-harms-non-medicine-and-non-surgical-treatments-non-specific-low-back"
    },
    {
      "title": "Durable Effect of Acupuncture for Chronic Neck Pain: A Systematic Review and Meta-Analysis",
      "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC11416387/"
    },
    {
      "title": "Effectiveness of Acupuncture for Neck Pain: Systematic Review and Meta-analysis with Trial Sequential Analysis",
      "url": "https://pubmed.ncbi.nlm.nih.gov/41322280/"
    },
    {
      "title": "Effectiveness of Acupuncture for Neck Pain: Systematic Review and Meta-analysis with Trial Sequential Analysis",
      "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC12664314/"
    },
    {
      "title": "Acupuncture for osteoarthritis",
      "url": "https://www.cochrane.org/evidence/CD001977_acupuncture-osteoarthritis"
    },
    {
      "title": "Acupuncture for preventing migraine attacks",
      "url": "https://www.cochrane.org/evidence/CD001218_acupuncture-preventing-migraine-attacks"
    },
    {
      "title": "Acupuncture for tension-type headache",
      "url": "https://www.cochrane.org/evidence/CD007587_acupuncture-tension-type-headache"
    },
    {
      "title": "The Efficacy of Acupuncture in Post-Operative Pain Management: A Systematic Review and Meta-Analysis",
      "url": "https://pubmed.ncbi.nlm.nih.gov/26959661/"
    },
    {
      "title": "Effect of Acupuncture vs Sham Acupuncture or Waitlist Control on Joint Pain Related to Aromatase Inhibitors Among Women With Early-Stage Breast Cancer: A Randomized Clinical Trial",
      "url": "https://pubmed.ncbi.nlm.nih.gov/29998338/"
    },
    {
      "title": "Stimulation of the wrist acupuncture point PC6 for preventing postoperative nausea and vomiting: a network meta-analysis.",
      "url": "https://pubmed.ncbi.nlm.nih.gov/40938065/"
    },
    {
      "title": "Comparison between the Effects of Acupuncture Relative to Other Controls on Irritable Bowel Syndrome: A Meta-Analysis",
      "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC6877908/"
    },
    {
      "title": "Complementary Health Approaches for Chronic Pain: What the Science Says",
      "url": "https://www.nccih.nih.gov/health/providers/digest/complementary-health-approaches-for-chronic-pain-science"
    },
    {
      "title": "Acupuncture-related adverse events: systematic review and meta-analyses of prospective clinical studies",
      "url": "https://pubmed.ncbi.nlm.nih.gov/34489268/"
    },
    {
      "title": "Acupuncture-related adverse events: systematic review and meta-analyses of prospective clinical studies",
      "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC8422480/"
    },
    {
      "title": "Traditional Chinese Medicine: What You Need To Know",
      "url": "https://www.nccih.nih.gov/health/traditional-chinese-medicine-what-you-need-to-know"
    },
    {
      "title": "Cancer and Complementary Health Approaches: What You Need To Know",
      "url": "https://www.nccih.nih.gov/health/cancer-and-complementary-health-approaches-what-you-need-to-know"
    },
    {
      "title": "Code of Federal Regulations, Title 21, Volume 8, 2025 edition",
      "url": "https://www.govinfo.gov/content/pkg/CFR-2025-title21-vol8/pdf/CFR-2025-title21-vol8.pdf"
    },
    {
      "title": "Product Classification: needle, acupuncture, single use",
      "url": "https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfPCD/classification.cfm?ID=2917"
    },
    {
      "title": "WHO benchmarks for the practice of acupuncture",
      "url": "https://iris.who.int/bitstream/handle/10665/340838/9789240016880-eng.pdf?sequence=1"
    },
    {
      "title": "Revised STandards for Reporting Interventions in Clinical Trials of Acupuncture (STRICTA): Extending the CONSORT Statement",
      "url": "https://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1000261"
    },
    {
      "title": "Effect of Acupuncture vs Sham Acupuncture or Waitlist Control on Joint Pain Related to Aromatase Inhibitors Among Women With Early-Stage Breast Cancer: A Randomized Clinical Trial",
      "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC6583520/"
    },
    {
      "title": "Examination Requirements - California Acupuncture Board",
      "url": "https://www.acupuncture.ca.gov/students/exam_require.shtml"
    },
    {
      "title": "NYS Acupuncture:License Requirements",
      "url": "https://www.op.nysed.gov/professions/acupuncture/license-requirements"
    },
    {
      "title": "Recommendations | Low back pain and sciatica in over 16s: assessment and management | Guidance | NICE",
      "url": "https://www.nice.org.uk/guidance/NG59/chapter/recommendations"
    },
    {
      "title": "NCD - Acupuncture for Chronic Lower Back Pain (cLBP) (30.3.3)",
      "url": "https://www.cms.gov/medicare-coverage-database/view/ncd.aspx?bc=18&chapter=all&ncdid=373&ncdver=1&sortBy=chapter"
    }
  ],
  "license": "https://creativecommons.org/licenses/by/4.0/"
}