According to the World Health Organization, acupuncture is used in 103 of 129 countries that reported data.
In the United States, data from the National Health Interview Survey showed a 50 percent increase in the number of acupuncture users between 2002 and 2012. In 2012, the most recent year for which statistics are available, 6.4 percent of U.S. adults reported they had used acupuncture, and 1.7 percent reported they had used it in the past 12 months.
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 involve:
Research has shown that acupuncture may be helpful for several pain conditions, including back or neck pain, knee pain associated with osteoarthritis, and postoperative pain. It may also help relieve joint pain associated with the use of aromatase inhibitors, which are drugs used in people with breast cancer.
An analysis of data from 20 studies (6,376 participants) of people with painful conditions (back pain, osteoarthritis, neck pain, or headaches) showed that the beneficial effects of acupuncture continued for a year after the end of treatment for all conditions except neck pain.