The Chinese and other Eastern peoples have been using acupuncture to restore, promote and maintain good health for about 2,500 years. Stone needles were originally used, and later bronze, gold and silver needles. Acupuncture is rooted in the Daoist philosophy of change, growth, balance and harmony. Amazingly, these records also contain details of pathology and physiology which provide the theoretical foundation for acupuncture today, some 2000 years later. Today acupuncture is used far more extensively in China than in the West, in a hospital-based system with facilities for treating emergency as well as long term cases.