Acupuncture is the practice of puncturing the skin with needles at certain anatomical points in the body to relieve specific symptoms associated with many diseases. The anatomical points (acupuncture points) are thought to have certain electrical properties, which affect chemical neurotransmitters in the body. Acupuncture is one of the oldest, most commonly used medical practices in the world. Originated in China more than 2,500 years ago, acupuncture gained attention in this country in the 1970s, when China and the US opened relations. The practice has been growing in popularity since. According to theories of traditional Chinese medicine, the human body has more than 2,000 acupuncture points connected via pathways, or meridians. These pathways create an energy flow (Qi, pronounced "chee") through the body that is responsible for overall health. Disruption of the energy flow can cause disease. Acupuncture may correct these imbalances when applied at acupuncture points and improve the flow of Qi. Acupuncture theories today are based on extensive laboratory research, and have become widely known and accepted. In addition, controlled studies have shown evidence of the effectiveness of acupuncture for certain conditions. Many studies have documented acupuncture's effects on the body, but none has fully explained how acupuncture works within the framework of Western medicine. Researchers have proposed several processes to explain acupuncture's effects. Acupuncture points are believed to stimulate the central nervous system, which, in turn, releases chemicals into the muscles, spinal cord, and brain. These chemicals either alter the experience of pain or release other chemicals that influence the body's self-regulating systems. These biochemical changes may stimulate the body's natural healing abilities and promote physical and emotional well-being. |