Prevalence of obesity in China and obesity related disorders
【摘要】：Background The proportion of the population that is overweight or obese has been increasing worldwide in recent years in conjunction with economic development. Obesity significantly impairs quality of life. There have been no studies of obesity in a representative sample of the adult population in China. Our objective was to estimate the prevalence of excess weight and obesity in a Chinese population older than 18 years of age and to examine its association with certain medical conditions. Methods A total of 16635 subjects (10782 men and 5853 women) who received health examinations in our hospital from January, 2004 to August, 2006 were enrolled in our survey. Body mass index (BMI), uric acid concentration (UAC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), fasting plasma glucose (FPG), systolic blood pressure (SBP), diastolic blood pressure (DBP), C-reactive protein (CRP) and other parameters were measured to evaluate their prevalence according to age and gender. We analyzed the relationship between obesity and the parameters listed. Obesity was defined as BMI 25 kg/m2 and being overweight as BMI = 23.0 to 24.9 kg/m2. Results (1) The overall prevalence of the overweight and obese population combined was 60.22% and the total mean BMI was 23.91±3.37kg/m2. (2)There were significant group differences in mean BMI and the prevalence of being overweight or obese by age group (p0.01).They were significantly higher in the 50 to 59 years old group than that in the other groups (p 0.01). (3)The mean BMI in the male group was 24.73±3.19 kg/m2, which is higher than the mean BMI of 22.41±3.18 kg/m2 in the female group (p 0.01). The incidence of being overweight or obese in the male group was 72.33%, which is much higher than the 37.91% incidence in the female group (p 0.01). (4)There were significant group differences in SBP, DBP, FPG, UAC, TG, CHOL, HDL-C, LDL-C, CRP (p 0.01) There was no significant difference in BNP (p 0.05). (5)The incidence of hypertension, type 2 diabetes, hyperuricemia, dyslipidemia, fatty liver, gallstones, urinary stones and prostatic hyperplasia were significantly higher in the overweight or obese group than that in normal weight group (p 0.01). There were no significant differences in the incidence of polyps of the gallbladder and albuminuria (p 0.05). (6)Hyperuricemia, dyslipidemia, hypertension, gender, type 2 diabetes, nonalcoholic fatty liver, and prostatic hyperplasia were variables significantly associated with obesity. (7) The prevalence of the overweight or obese population was associated with dyslipidemia, type 2 diabetes, nonalcoholic fatty liver, hypertension and hyperuricemia. Conclusions There was a high prevalence of being overweight or obese among certain populations in China. Hyperuricemia, dyslipidemia, hypertension, gender, type 2 diabetes, nonalcoholic fatty liver and albuminuria were positive risk factors for those who are overweight or obese. Obesity was associated with hypertension, Type 2 diabetes, prostatic hyperplasia, nonalcoholic fatty liver and dyslipidemia.