|Anterior View of Meridians||Posterior View of Meridians|
|Lateral View of Meridians||Meridians of the Head|
Traditional Chinese medicine theorizes there are more than 2,000 acupuncture points on the human body, and these connect with 12 main and 8 secondary pathways called meridians. Chinese medicine practitioners believe these meridians conduct energy, or qi (pronounced “chee”), throughout the body.
Qi is believed to regulate spiritual, emotional, mental, and physical balance and to be influenced by the opposing forces of yin and yang. According to traditional Chinese medicine, when yin and yang are balanced, they work together with the natural flow of qi to help the body achieve and maintain health. Acupuncture is believed to balance yin and yang, keep the normal flow of energy unblocked, and maintain or restore health to the body and mind.
Traditional Chinese medicine practices (including acupuncture, herbs, diet, massage, and meditative physical exercise) all are intended to improve the flow of qi.
Western scientists have found meridians hard to identify because meridians do not directly correspond to nerve or blood circulation pathways. Some researchers believe that meridians are located throughout the body’s connective tissue; others do not believe that qi exists at all. Such differences of opinion have made acupuncture an area of scientific controversy.
Several processes have been proposed to explain acupuncture’s effects, primarily those on pain. Acupuncture points are believed to stimulate the central nervous system (the brain and spinal cord) to release chemicals into the muscles, spinal cord, and brain. These chemicals either change the experience of pain or release other chemicals, such as hormones, that influence the body’s self-regulating systems. The biochemical changes may stimulate the body’s natural healing abilities and promote physical and emotional well-being.7 There are three main mechanisms:
Preclinical studies have documented acupuncture’s effects, but they have not been able to fully explain how acupuncture works within the framework of the Western system of medicine.
According to the NIH Consensus Statement on Acupuncture:
Acupuncture as a therapeutic intervention is widely practiced all over the world. While there have been many studies of its potential usefulness, many of these studies provide equivocal results because of design, sample size, and other factors. The issue is further complicated by inherent difficulties in the use of appropriate controls, such as placebos and sham acupuncture groups.
However, promising results have emerged, for example, showing efficacy of acupuncture in adult postoperative and chemotherapy nausea and vomiting and in postoperative dental pain. There are other situations such as addiction, stroke rehabilitation, headache, menstrual cramps, tennis elbow, fibromvalgia, myofascial pain, osteoarthritis, low back pain, carpal tunnel syndrome, and asthma, in which acupuncture may be useful as an adjunct treatment or an acceptable alternative or be included in a comprehensive management program. Further research is likely to uncover additional areas where acupuncture interventions will be useful.
Increasingly, acupuncture is complementing conventional therapies. For example, doctors may combine acupuncture and drugs to control surgery-related pain in their patients. By providing both acupuncture and certain conventional anesthetic drugs, some doctors have found it possible to achieve a state of complete pain relief for some patients. They also have found that using acupuncture lowers the need for conventional pain-killing drugs and thus reduces the risk of side effects for patients who take the drugs.
Currently, one of the main reasons people seek acupuncture treatment is to relieve chronic pain, especially from conditions such as arthritis or lower back disorders. Some clinical studies show that acupuncture is effective in relieving both chronic (long-lasting) and acute or sudden pain.