Does Urinary Bisphenol-A Change after Bariatric Surgery?

Journal of the American College of Surgeons
Carl L DambkowskiJohn M Morton

Abstract

One of the world's highest volume chemicals is bisphenol-A (BPA), an organic compound with a high solubility in fat. An emerging body of literature has suggested a link between BPA, obesity, and insulin resistance. The study aim was to determine if surgical weight loss is associated with changes in BPA levels. Demographic, preoperative, and 3-, 6-, and 12-month postoperative urine and laboratory data were prospectively collected on 22 bariatric surgery patients at a single academic institution. Laboratory values included hemoglobin A1C, fasting insulin, and fasting glucose. Demographic, preoperative and postoperative data, and urinary BPA levels were compared using Student's t-tests and simple regression analyses using GraphPad Prisim6 software. Patients were predominantly privately insured (86%), female (83%), and white (68%). Urinary BPA excretion was negatively correlated with weight at 6 months (r = -0.47, p = 0.029) and 12 months (r = -0.65, p = 0.006). The average weight before surgery was 274 pounds. Average preoperative BPA excretion was 2.4 ng/mL (SD = 1.0 ng/mL) in patients lighter than average weight and 1.3 ng/mL (SD = 0.7 ng/mL) in patients heavier than average weight (p = 0.006). Average BPA excretion at 12 months...Continue Reading

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