Once considered a form of quackery, acupuncture is slowly gaining respect in the world of Western medicine. This alternative therapy has been shown to reduce pain associated with menstrual cramps, and a review of 11 studies found acupuncture to be useful for relieving tension headaches. Caused by tense muscles in the neck, head, or scalp, tension headaches chronically affect about 45 million Americans. Tension headaches are commonly treated with over-the-counter pain medication, but researchers believe that acupuncture could be a "valuable option" for folks suffering from chronic tension headaches. Have you ever been needled to relieve pain? If so, do you think it worked?