and his colleagues at Cincinnati Children’s Hospital Medical Center have been conducting a Health Outcomes and Measures of the Environment – or HOME – Study for several years. A primary focus has been the investigation of neurobehavioral risks posed by lead exposures early in a child’s development. For the study, moms were recruited early in pregnancy and then followed through their babies’ births. The children – now three to five years old – will continue to be followed into school age.
Joe Braun of the University of North Carolina in Chapel Hill, Lanphear and their colleagues (from Cincinnati and the Centers for Disease Control and Prevention) decided to also scout for signs of any BPA impacts within a subset of HOME participants: 249 randomly selected mother-infant pairs. The recruits tended to be middle class and well educated, Braun notes.
More than 99 percent of the pregnant women tested positive for BPA during at least one of three urine tests during pregnancy. Ninety percent of the samples overall contained detectable concentrations of the estrogen-mimicking pollutant. Those concentrations proved quite variable, but usually turned up in the low parts per million range. For unknown reasons, one mom’s values were off the charts at 1,250 ppm, Braun notes.
In a paper out today in Environmental Health Perspectives, Braun’s team reports that the higher a mom’s BPA levels were during her first 16 weeks of pregnancy, the more likely her child was to later show behavior somewhat
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