Abstract OBJECTIVE: To investigate the incident and prevalence of type 2 diabetes mellitus (T2DM) and prediabetes in obese children in the last ten years. METHODS: The clinical data of hospitalized children with newly diagnosed diabetes mellitus (DM) or obesity between October 2000 and September 2010 were retrospectively studied. RESULTS: A total of 503 newly onset cases were diagnosed as DM in the past ten years, of which 31 were diagnosed as T2DM. The prevalence of T2DM in the second five-year duration increased significantly compared with that in the first five-year duration (0.18‰ vs 0.05‰; P<0.01). The number of cases of type 1 diabetes mellitus (T1DM) and T2DM increased by 1.35 fold and 4.20 fold, respectively in the second five-year duration. A total of 1301 obese patients received oral glucose tolerance tests, and 29 cases were diagnosed with T2DM and 255 cases with prediabetes. Of the 255 cases of prediabetes, 133 had dyslipidemia, 138 had non-alcoholic fatty liver disease and 53 had hypertension. CONCLUSIONS: The prevalence rates of T1DM and T2DM increased significantly in the last 5 years. The prevalence of T2DM increased more significantly than T1DM. There was a higher prevalence of prediabetes in obese children. Childhood obesity predicts a higher risk of T2DM and cardiovascular disease in the future.
［10］Williams DE, Cadwell BL, Cheng YJ, Cowie CC, Gregg EW, Geiss LS, et al. Prevalence of impaired fasting glucose and its relationship with cardiovascular disease risk factors in US adolescents, 19992000［J］.Pediatrics, 2005, 116(5):1122-1126.
［11］Cambuli VM, Incani M, Pilia S, Congiu T, Cavallo MG, Cossu E, et al. Oral glucose tolerance test in Italian overweight/obese children and adolescents results in a very high prevalence of impaired fasting glycaemia, but not of diabetes［J］. Diabetes Metab Res Rev, 2009, 25(6):528-534.
