Over the years there has been substantial debate about whether acupuncture really works for chronic pain. Research from an international team of experts adds to the evidence that it does provide real relief from common forms of pain. The team pooled the results of 29 studies involving nearly 18,000 participants. Some had acupuncture, some had “sham” acupuncture, and some didn’t have acupuncture at all. Overall, acupuncture relieved pain by about 50%. The results were published in Archives of Internal Medicine. The study isn’t the last word on the issue, but it is one of the best quality studies to date and has made an impression.