Ancient Natural Painkillers

According to theory, a variety of needles are inserted into any of hundreds of points throughout the body to balance the flow of yin and yang through the body’s meridians. Critics of the procedure suggest that its effectiveness as an anesthetic and as an agent for treating other conditions is mostly due to placebo effects. However, it’s possible that some acupuncture points could be “trigger points that [do] stimulate physiological responses in the body.”