体重指数、腰围与代谢性健康风险的关系

Study on the metabolic health risks of body mass index and waist circumference

目的 比较体重指数(BMI)、腰围(WC)与代谢性键康风险的大小。方法 对苏州市和常熟市两个社区的江苏省多代谢异常和代谢综合征(MS)防治研究中，经济发达地区基线资料的1604例对象按BMl和WC分组，在正常体重(BMI：18～23．9)、超重(BMI：24～27．9)、肥胖(BMI≥28)类别中，计算高血压、高血糖、血脂异常的相对危险度(RR)，并对WC类别中腹型肥胖(男≥85cm，女≥80 cm)和WC正常个体进行比较。结果 无论是男性还是女性，其高血压、糖脂代谢各项指标以及MS的罹患率均与BMI和WC相关，控制混杂因素后，这样的相关性依然俘在；但仅BMI超重时，各项表示代谢性健康风险的aRR值基本上都低于BMI超重合并腹型肥胖的aRR值；男、女性BMI正常但有腹型肥胖时，均较PMI超重而WC正常者的健康风险高。结论 WC在表示代谢性健康风险方面比BMI更为有效。

Objective To evaluate the effect of body mass index（BMI） and waist circumference （WC） on metabolic health risks（MHR）. Methods Based on data from two community populations （Suzhou city and Changshu city） derived from a project on ‘multiple metabolic disorders and metabolic syndrome’ in Jiangsu province. 1604 subjects were divided into groups as normal weight（BMI：18-23.9）, overweight（BMI：24-27.9） and obesity（BMI≥28） according to BMI measurement. According to the results from WC measurement, they were grouped as abdominal obesity （ male ： ≥ 85 cm ; female ： ≥ 80 cm） and normal. Relative risks （RR） for hypertension, hyperglycemia, dyslipidemia were calculated. Results In males and females, the mark values of hypertension, hyperglycemia＇, dyslipidemia as well as the prevalence of MS were related to BMI and WC. The relativity remained true when the confounding factors were under control. Among the overweight group, the aRR of all these metabolic health risks were basically lower than those when the overweight group and the abdominal obesity group were combined. Both in males and females,when groups combining normal weight with abdominal obesity group, the aRR of all these metabolic health risks were higher than overweight group combining with normal WC group in most of the cases. Conclusion As to the effect of BMI and WC on metabolic health risks,WC - the mark of abdominal obesity seemed to be more effective than BMI.