Traditional Chinese Medicine (TCM) is a complete medical system that has been used to diagnose, treat, and prevent illnesses for more than 2,000 years.
It is based on ensuring that opposing energies, called yin and yang, are in balance and that the life force or energy in every body, called qi, is also balanced and flowing freely.
When there's too little or too much qi in one of the body's energy pathways or when the flow of qi is blocked, illness results.
According to the National Center for Complementary and Alternative Medicine,
TCM encompasses many different practices, including acupuncture, moxibustion (burning an herb above the skin to apply heat to acupuncture points), Chinese herbal medicine, tui na (Chinese therapeutic massage), dietary therapy, and tai chi and qi gong (practices that combine specific movements or postures, coordinated breathing, and mental focus). TCM is rooted in the ancient philosophy of Taoism and dates back more than 2,500 years. Traditional systems of medicine also exist in other East and South Asian countries, including Japan (where the traditional herbal medicine is called Kampo) and Korea. Some of these systems have been influenced by TCM and are similar to it in some ways, but each has developed distinctive features of its own.
According to the National Center for Complementary and Alternative Medicine