Acupuncture

Acupuncture, ancient Chinese medical practice in which fine needles are inserted into the body at specified points. It can be used as a pain reliever, an anesthesia, and a treatment for a variety of conditions, including arthritis, ulcers, and migraine. Research has shown that acupuncture has a specific effect on the release of certain chemical transmitters— natural painkillers known as endorphins—from nerve cells in the brain. Acupuncture is not fully accepted in the United States.

See also: Endorphins.