Acupuncture is believed to work by stimulating the body’s natural healing abilities. One theory is that the needles help release endorphins, the body’s natural painkillers. Another theory suggests that acupuncture can influence the nervous system to help reduce pain, inflammation, and stress. It may also improve circulation and boost immune function. Some research suggests that acupuncture helps improve the body’s response to inflammation, which is key in treating chronic pain and other health conditions.