糖尿病是一种慢性代谢性疾病,大体分为1型和2型糖尿病两大类型,据统计2型糖尿病占糖尿病患者90%～95%。目前在世界范围内糖尿病的发病呈流行趋势,在上世纪末,人群中的糖尿病的发病率达4%,而到2005年,这一数字将达5．5%。世界卫生组织估计2003年,全世界约有1．94亿人患糖尿病,到2005年将增到3．33亿。近年来,我国 Diabetes mellitus is a chronic metabolic disease and can be divided into two major types of type 1 and type 2 diabetes. Type 2 diabetes accounts for 90% -95% of those with diabetes. The prevalence of diabetes is currently on a worldwide trend. By the end of the last century, the incidence of diabetes in the population reached 4%. By 2005, this figure will reach 5.5%. The World Health Organization estimates that in 2003 there were about 194 million people with diabetes worldwide and by 2003 it will increase to 333 million. In recent years, our country