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Traditional Chinese medicine (TCM; ) is a style of traditional medicine based on more than 2,500 years of Chinese medical practice that includes various forms of herbal medicine, acupuncture, massage (tui na), exercise (qigong), and dietary therapy, but recently also influenced by modern Western medicine. TCM is widely used in Greater China where it has a long history, and recently it has begun "gaining global recognition". One of the basic tenets of TCM is that "the body's vital energy ("ch'i" or "qi") circulates through channels, called "meridians," that have branches connected to bodily organs and functions." Concepts of the body and of disease used in TCM reflect its ancient origins and its emphasis on dynamic processes over material structure, similar to European humoral theory. 
more than 2,500 years