Acupuncture: In Depth
What Is Acupuncture?
What the Science Says About the Effectiveness of Acupuncture
Results from a number of studies suggest that acupuncture may help ease types of pain that are often chronic such as low-back pain, neck pain, and osteoarthritis/knee pain. It also may help reduce the frequency of tension headaches and prevent migraine headaches. Therefore, acupuncture appears to be a reasonable option for people with chronic pain to consider. However, clinical practice guidelines are inconsistent in recommendations about acupuncture.
The effects of acupuncture on the brain and body and how best to measure them are only beginning to be understood. Current evidence suggests that many factors—like expectation and belief—that are unrelated to acupuncture needling may play important roles in the beneficial effects of acupuncture on pain.
Read more about acupuncture for these pain conditions and others:
For Low-Back Pain
- A 2012 analysis of data on participants in acupuncture studies looked at back and neck pain together and found that actual acupuncture was more helpful than either no acupuncture or simulated acupuncture.
- A 2010 review by the Agency for Healthcare Research and Quality found that acupuncture relieved low-back pain immediately after treatment but not over longer periods of time.
- A 2008 systematic review of studies on acupuncture for low-back pain found strong evidence that combining acupuncture with usual care helps more than usual care alone. The same review also found strong evidence that there is no difference between the effects of actual and simulated acupuncture in people with low-back pain.
- Clinical practice guidelines issued by the American Pain Society and the American College of Physicians in 2007 recommend acupuncture as one of several nondrug approaches physicians should consider when patients with chronic low-back pain do not respond to self-care (practices that people can do by themselves, such as remaining active, applying heat, and taking pain-relieving medications).
For Neck Pain
- A 2009 analysis found that actual acupuncture was more helpful for neck pain than simulated acupuncture, but the analysis was based on a small amount of evidence (only three studies with small study populations).
- A large German study with more than 14,000 participants evaluated adding acupuncture to usual care for neck pain. The researchers found that participants reported greater pain relief than those who didn’t receive it; the researchers didn’t test actual acupuncture against simulated acupuncture.
For Osteoarthritis/Knee Pain
- A 2014 Australian clinical study involving 282 men and women showed that needle and laser acupuncture were modestly better at relieving knee pain from osteoarthritis than no treatment, but not better than simulated (sham) laser acupuncture. Participants received 8 to 12 actual and simulated acupuncture treatments over 12 weeks. These results are generally consistent with previous studies, which showed that acupuncture is consistently better than no treatment but not necessarily better than simulated acupuncture at relieving osteoarthritis pain.
- A major 2012 analysis of data on participants in acupuncture studies found that actual acupuncture was more helpful for osteoarthritis pain than simulated acupuncture or no acupuncture.
- A 2010 systematic review of studies of acupuncture for knee or hip osteoarthritis concluded that actual acupuncture was more helpful for osteoarthritis pain than either simulated acupuncture or no acupuncture. However, the difference between actual and simulated acupuncture was very small, while the difference between acupuncture and no acupuncture was large.
- A 2012 analysis of data on individual participants in acupuncture studies looked at migraine and tension headaches. The analysis showed that actual acupuncture was more effective than either no acupuncture or simulated acupuncture in reducing headache frequency or severity.
- A 2009 systematic review of studies concluded that actual acupuncture, compared with simulated acupuncture or pain-relieving drugs, helped people with tension-type headaches. A 2008 systematic review of studies suggested that actual acupuncture has a very slight advantage over simulated acupuncture in reducing tension-type headache intensity and the number of headache days per month.
- A 2009 systematic review found that adding acupuncture to basic care for migraines helped to reduce migraine frequency. However, in studies that compared actual acupuncture with simulated acupuncture, researchers found that the differences between the two treatments may have been due to chance.
For Other Conditions
- Results of a systematic review that combined data from 11 clinical trials with more than 1,200 participants suggested that acupuncture (and acupuncture point stimulation) may help with certain symptoms associated with cancer treatments.
- There is not enough evidence to determine if acupuncture can help people with depression.
- Acupuncture has been promoted as a smoking cessation treatment since the 1970s, but research has not shown that it helps people quit the habit.
Read more about the challenges of studying acupuncture:
Studying acupuncture is challenging because:
- Clinical trials often differ in terms of technique, the number of acupuncture points, the number of sessions, and the duration of those sessions.
- Results of an acupuncture session may be associated with a person’s beliefs and expectations about their treatment or from their relationship with the therapist, rather than from acupuncture treatment itself.
What Is Simulated Acupuncture?
In some clinical trials, researchers test a product or practice against an inactive product or technique (called a placebo) to see if the response is due to the test protocol or to something else. Many acupuncture trials rely on a technique called simulated acupuncture, which may use blunt-tipped retractable needles that touch the skin but do not penetrate (in real acupuncture, needles penetrate the skin). Researchers also may simulate acupuncture in other ways. However, in some instances, researchers have observed that simulated acupuncture resulted in some degree of pain relief.
What the Science Says About Safety and Side Effects of Acupuncture
- Relatively few complications from using acupuncture have been reported. Still, complications have resulted from use of nonsterile needles and improper delivery of treatments.
- When not delivered properly, acupuncture can cause serious adverse effects, including infections, punctured organs, collapsed lungs, and injury to the central nervous system.
Read more about what the science says about safety and side effects of acupuncture:
The U.S. Food and Drug Administration (FDA) regulates acupuncture needles as medical devices for use by licensed practitioners and requires that needles be manufactured and labeled according to certain standards. For example, the FDA requires that needles be sterile, nontoxic, and labeled for single use by qualified practitioners only.
NCCIH funds research to evaluate acupuncture’s effectiveness for various kinds of pain and other conditions, and to further understand how the body responds to acupuncture and how acupuncture might work. Some recent NCCIH-supported studies are looking at:
- If acupuncture can reduce the frequency of hot flashes associated with menopause
- Whether acupuncture can reduce pain and discomfort that may accompany chemotherapy
- Objectively determining if actual acupuncture is more effective than simulated acupuncture or usual care for pain relief, and (if so) by how much.
More to Consider
- Don’t use acupuncture to postpone seeing a health care provider about a health problem.
- If you decide to visit an acupuncturist, check his or her credentials. Most states require a license, certification, or registration to practice acupuncture; however, education and training standards and requirements for obtaining these vary from state to state. Although a license does not ensure quality of care, it does indicate that the practitioner meets certain standards regarding the knowledge and use of acupuncture. Most states require a diploma from the National Certification Commission for Acupuncture and Oriental Medicine for licensing.
- Some conventional medical practitioners—including physicians and dentists—practice acupuncture. In addition, national acupuncture organizations (which can be found through libraries or by searching the Internet) may provide referrals to acupuncturists. When considering practitioners, ask about their training and experience.
- Ask the practitioner about the estimated number of treatments needed and how much each treatment will cost. Some insurance companies may cover the costs of acupuncture, while others may not. For more information, see NCCIH’s fact sheet Paying for Complementary Health Approaches.
- Help your health care providers give you better coordinated and safe care by telling them about all the health approaches you use. Give them a full picture of what you do to manage your health.
For More Information
The NCCIH Clearinghouse provides information on NCCIH and complementary and integrative health approaches, including publications and searches of Federal databases of scientific and medical literature. The Clearinghouse does not provide medical advice, treatment recommendations, or referrals to practitioners.
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- Chou R, Qaseem A, Snow V, et al. Diagnosis and treatment of low back pain: a joint clinical practice guideline from the American College of Physicians and the American Pain Society. Annals of Internal Medicine. 2007;147(7):478–491.
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- National Cancer Institute. Acupuncture (PDQ), Patient Version. National Cancer Institute Web site. Accessed at www.cancer.gov/cancertopics/pdq/cam/acupuncture/Patient/page2 on July 2, 2014.
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NCCIH thanks the following people for their technical expertise and review of this publication: Lixing Lao, Ph.D., University of Maryland School of Medicine; Karen Sherman, Ph.D., M.P.H., Group Health Research Institute, Seattle; Maria E. Suarez-Almazor, M.D., Ph.D., The University of Texas M.D. Anderson Cancer Center; and Kristin Huntley, Ph.D., Partap Khalsa, D.C., Ph.D., and John (Jack) Killen, Jr., M.D., NCCIH.
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