In a new scientific study published online on January 30, 2015 in the peer-reviewed journal Environment International, Lorber and colleagues assess adult exposure to bisphenol A (BPA, CAS 80-05-7) via diet. The researchers previously measured BPA in a variety of foods sold in Dallas, U.S. and detected BPA in 63 of 105 samples. The current study builds upon the earlier one by adding 116 food samples from the same region. The two rounds of sampling are used to estimate exposure to BPA, which is then compared to total intake of BPA determined from urinary biomonitoring data. The authors calculated BPA exposure to be 12.6 ng/kg/day. Canned foods constituted 98% of the intake. Total adult central tendency intake determined from BPA urinary concentrations was markedly higher and ranged from 30 to 70 ng/kg/day. The authors provide possible explanations for this difference. First, the BPA canned food concentrations may not be adequately representative of canned foods sold on the U.S. market. Second, not all canned foods, which might contain BPA (e.g. soft drinks), were sampled in the study. Third, non-food exposure pathways were excluded from the exposure assessment. The authors conclude that the study nonetheless underscores the importance of canned foods in the overall BPA exposure of adults. In a new report, the Food Packaging Forum summarizes the study.
FPF report “Dietary intake of BPA in the US.”
Lorber, M. et al. (2015). “Exposure assessment of adult intake of bisphenol A (BPA) with emphasis on canned food dietary exposures.” Environment International 77, 55–62.