Chinese medicine regards diabetes as excessive Lung and Stomach Fire and Kidney Yin deficiency, a result of improper diet and emotional distress. With exhaustion of the upper body, excessive drinking (polydypsia caused by thirst is the major symptom). This is due to exhaustion of body fluid (Jin and Yue) by the excess heat of Lung (Lung-Fire). This produces symptoms of weakness and tiredness (exhaustion of Qi) and also increases appetite and urine. These characteristic symptoms often signal the beginning of the diabetes.