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Chinese
physicians believed that diseases result from imbalances
in two life forces, Yin and Yang, that flow through
the body. Drugs and other treatments were intended to
restore this balance. Hundreds of ancient herbal medicines,
including iron for anemia, mercury for syphilis, arsenic
for skin diseases, and opium, are still used in traditional
Chinese medicine. Other Chinese medicines and techniques,
including acupuncture, are now commonly used in Western
medicine. Most Chinese medicine was based on a famous
textbook, the Nei Ching, written by Emperor Huang Ti
between 479 and 300 bc. Chinese physicians specialized
in treating wounds, fractured bones, allergies, and
other diseases. They diagnosed patients by asking questions
about symptoms, diet, and previous illnesses, and by
checking the patient's pulse.
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