Plastics Chemical Tied to Aggression in Young Girls

BPA has been linked to other dangers, but behavioral effects remain unclear

By Serena Gordon
HealthDay Reporter

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TUESDAY, Oct. 6 (HealthDay News) -- In the latest study to suggest an association between the plastics chemical bisphenol A (BPA) and adverse effects on humans, researchers report that BPA may affect the behavior of little girls.

Girls exposed to higher levels of BPA displayed more "externalizing" behaviors, such as aggression and hyperactivity, according to the study, which is published in the Oct. 6 online edition of Environmental Health Perspectives.

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"We found almost all of the women [in the study] had detectable levels of bisphenol A in at least one of the tests, and elevated concentrations were associated with externalizing behaviors in female children," said study author Joe Braun, a graduate student and research assistant in epidemiology at the Gillings School of Global Public Health at the University of North Carolina at Chapel Hill.

Not everyone agreed with the study's conclusions, however.

"This type of study has no capability to establish cause and effect, only associations. At the end of the study, the authors even point out that the results 'should be viewed cautiously,'" noted Steven Hentges, executive director of the polycarbonate/BPA global group at the American Chemistry Council, which represents the chemicals industry.

BPA is a commonly used chemical that's found in hard plastics and epoxy resins. The chemical is used in water bottles, food containers, infant bottles and medical devices. BPA may also be found in the lining of canned foods. Most human exposure comes through diet when the chemical leaches into food and beverages from the containers, according to the U.S. National Institute of Environmental Health Sciences. Previous studies suggest that more than 90 percent of people in the United States have detectable levels of BPA in their urine.

Animal studies of the chemical have found an association between BPA and adverse neurodevelopmental effects on fetuses and newborns, according to background information in the study.

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