Original sentence: , help in quitting smoking) or have concluded that there is insufficient evidence to determine if acupuncture is effective (e., treating shoulder pain).For most other conditions reviewers have found either a lack of efficacy (e.Researchers using the protocols of evidence-based medicine have found good evidence that acupuncture is moderately effective in preventing nausea.Scientists are studying the mechanisms and efficacy of acupuncture.The WHO, the National Center for Complementary and Alternative Medicine (NCCAM) of the National Institutes of Health (NIH), the American Medical Association (AMA) and various government reports have also studied and commented on the efficacy of acupuncture.The effectiveness of acupuncture remains controversial in the scientific community, and a review by Edzard Ernst and colleagues in 2007 found that the body of evidence was growing, research is active, and that the "emerging clinical evidence seems to imply that acupuncture is effective for some but not all conditions".There is also general agreement that acupuncture is safe when administered by well-trained practitioners, and that further research is warranted.There is conflicting evidence that it can treat chronic low back pain, and moderate evidence of efficacy for neck pain and headache.While little is known about the mechanisms by which acupuncture may act, a review of neuroimaging research suggests that specific acupuncture points have distinct effects on cerebral activity in specific areas that are not otherwise predictable anatomically
Edited sentence: A review by Edzard Ernst and colleagues in 2007 found that more research was being done and concluded that "emerging clinical evidence seems to imply that acupuncture is effective for some but not all conditions".For most conditions acupuncture has no effect