A study on acupuncture for carpal tunnel syndrome focusing on how acupuncture works via its effects on the brain was recently completed at Massachusetts General Hospital in Boston.  Acupuncture was found to be effective for carpal tunnel, and the acupuncture treatments induced changes in the somatosensory cortex of the brain.  Results were published in the neurology journal Brain.  The New York Times elaborated on the study in the article Acupuncture Can Ease Wrist Pain of Carpal Tunnel Syndrome; and Time Magazine explained the study The Weird Way Acupuncture Helps Carpal Tunnel Syndrome.