Human: What is acupuncture? Is it effective? Assistant: 
Acupuncture is an ancient Chinese medical practice that involves inserting thin needles into specific points on the body. It is used to treat a variety of conditions, including pain and stress-related disorders. Studies have shown that acupuncture can help reduce pain, anxiety, and depression, as well as improve sleep quality and physical function. However, more research is needed to determine its long-term effectiveness.