糖尿病是“富贵病”，其发病率随着人们生活水平的提高以及饮食结构向“三高”倾斜而迅速增高。糖尿病已成为继心血管病、癌症之后的第三大致死性疾病。糖尿病典型的临床症状是“三高一低”，即多饮、多尿、多食及体重减轻（或明显消瘦）。糖尿病也属于慢性病，大多有一个长期 Diabetes is “rich disease”, the incidence of which increases rapidly with the improvement of people’s living standards and the tilt of diet structure toward “three highs”. Diabetes has become the third most lethal disease after cardiovascular disease and cancer. Typical clinical symptoms of diabetes are “three high and one low,” that is, polydipsia, polyuria, eating more and weight loss (or significant weight loss). Diabetes is also a chronic disease, most of them have a long-term