Abstract Title:

Urinary Bisphenol A (BPA) Concentration Associates with Obesity and Insulin Resistance.

Abstract Source:

J Clin Endocrinol Metab. 2011 Nov 16. Epub 2011 Nov 16. PMID: 22090277

Abstract Author(s):

Tiange Wang, Mian Li, Bing Chen, Min Xu, Yu Xu, Yun Huang, Jieli Lu, Yuhong Chen, Weiqing Wang, Xiaoying Li, Yu Liu, Yufang Bi, Shenghan Lai, Guang Ning

Article Affiliation:

Key Laboratory for Endocrine and Metabolic Diseases of Ministry of Health (T.W., M.L., M.X., Y.X., Y.H., J.L., Y.C., W.W., X.L., Y.L., Y.B., S.L., G.N.); Shanghai Clinical Center for Endocrine and Metabolic Diseases, .


Context:Bisphenol A (BPA) is one of the world's highest-volume chemicals in use today. Previous studies have suggested BPA disturbs body weight regulation and promotes obesity and insulin resistance. But epidemiological data in humans were limited.Objective:Our objective was to determine whether BPA associates with obesity and insulin resistance.Design, Setting, and Participants:This cross-sectional study included 3390 adults aged 40 yr or older, in Songnan Community, Baoshan District, Shanghai, China.Main Outcome Measures:Questionnaire, clinical and biochemical measurements, and urinary BPA concentration were determined. Generalized overweight was defined as body mass index (BMI) of 24 to less than 28 kg/m(2) and obesity was defined as BMI of 28 kg/m(2) or higher. Abdominal obesity was defined as waist circumference at least 90 cm for men and at least 85 cm for women. Insulin resistance was defined as the index of homeostasis model assessment of insulin resistance higher than 2.50.Results:The participants in the highest quartile of BPA had the highest prevalence of generalized obesity [odds ratio (OR) = 1.50; 95% confidence interval (CI) = 1.15-1.97], abdominal obesity (OR = 1.28; 95% CI = 1.03-1.60), and insulin resistance (OR = 1.37; 95% CI = 1.06-1.77). In participants with BMI under 24 kg/m(2), compared with the lowest quartile, the highest quartile of BPA increased the prevalence of insulin resistance by 94% (OR = 1.94; 95% CI = 1.20-3.14), but this association was not observed in those with BMI of 24 kg/m(2) or higher.Conclusions:BPA was positively associated with generalized obesity, abdominal obesity, and insulin resistance in middle-aged and elderly Chinese adults.

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