糖尿病是由于胰岛素分泌不足，引起体内糖、蛋白质、脂肪及水盐代谢紊乱，致使血糖升高和排泄糖尿的一种内分泌代谢疾病。糖尿病的典型表现是“三多一少”———多饮、多食、多尿，体重却减轻。然而，临床上却有１／３左右的老年糖尿病患者不仅没有“三多一少”的症状，而且检 Diabetes is due to lack of insulin secretion, causing sugar, protein, fat and water metabolism disorders, resulting in hyperglycemia and excretion of diabetes, an endocrine and metabolic diseases. The typical performance of diabetes is “more than a few” --- drink more, eat more, more urine, weight but reduced. However, in clinical practice, about one-third of elderly diabetic patients do not have the symptoms of “more than one, less than one”