Acupuncture works by stimulating and activating the body’s own self-healing mechanism. Acupuncture can have a powerful effect on pain control by needling acupuncture points that then stimulate the body to produce its natural painkillers, endorphins, and enkephalins. Although the mechanisms for conditions other than pain -- such as allergies, colitis, and infertility have yet to be explained -- they are treated in clinical practice regularly.