To the Editor: In their study, Dr Lang and colleagues1 found that higher urinary concentrations of BPA were associated with diabetes. Based on animal studies, the authors had hypothesized that BPA exposure would be positively associated with type 2 diabetes. However, NHANES, the database used in this study, does not distinguish between type 1 and type 2 diabetes. Although it is likely that most of the participants with diabetes had type 2, it is probable that some of them had type 1.
Howard S, Howard TG. Association of Bisphenol A With Diabetes and Other Abnormalities. JAMA. 2009;301(7):720–722. doi:10.1001/jama.2009.121
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