A new study published in the April issue of the scientific peer-reviewed journal Environmental Research linked bisphenol A (BPA) exposure to ethnicity, season and phthalate exposure (Hoepner et al. 2013). The researchers from Columbia University, U.S. analyzed 568 African American and Dominican children aged 3, 5 and 7 residing in New York City. The cohort was part of the mothers and newborns longitudinal cohort study of the Columbia Center for Children’s Environmental Health (CCCEH). Hoepner and colleagues found BPA levels to be highest in 3 year olds, African Americans and during summer. In children aged 5 and 7, BPA levels were higher if mothers were single. Levels were also increased if coexposure to phthalates was high. BPA was present in more than 94% of the spot urine samples, with geometric mean levels 1.8, 3.7, 3.2 and 2.9 ng/ml in prenatal measurements and children of 3, 5 and 7 years respectively.
Hoepner, L.A., et al. (2013). “Urinary concentrations of bisphenol a in an urban minority birth cohort in new york city, prenatal through age 7 years.” Environmental Research 122:38-44.