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Updated: May 9, 2026

Long-term Behavioral and Reproductive Consequences of Embryonic Exposure to Low-dose Toxicants
Published on: March 6, 2018
Prenatal and early childhood bisphenol A concentrations and behavior in school-aged children
Kim G Harley1, Robert B Gunier, Katherine Kogut
1Center for Environmental Research and Children's Health (CERCH), School of Public Health, University of California, 1995 University Ave., Suite 265, Berkeley, CA 94704, USA.
Insights
Early exposure to bisphenol A (BPA) is linked to behavioral issues in children. Prenatal BPA exposure affected boys
Area of Science:
- Environmental Health
- Developmental Pediatrics
- Toxicology
Background:
- Bisphenol A (BPA) is an endocrine-disrupting chemical found in various consumer products.
- Previous animal and human studies suggest a link between early life BPA exposure and behavioral problems.
- Understanding the impact of BPA on child development is crucial for public health.
Purpose of the Study:
- To investigate the association between prenatal and childhood BPA exposure and child behavior.
- To examine potential sex differences in the effects of BPA on behavior.
Main Methods:
- Urine samples were collected from 292 mothers during pregnancy and their children at age 5.
- Child behavior was assessed at ages 7 and 9 using parent and teacher reports, and direct assessments.
- Urinary BPA concentrations were measured to quantify exposure levels.
Main Results:
- Prenatal BPA exposure was associated with increased internalizing behaviors (anxiety, depression) in 7-year-old boys.
- Childhood BPA exposure was linked to externalizing behaviors (conduct problems) in 7-year-old girls.
- Childhood BPA exposure was also associated with internalizing behaviors and inattention/hyperactivity in both boys and girls at age 7.
Conclusions:
- This study reinforces the association between early life BPA exposure and behavioral problems in children.
- Findings highlight potential sex-specific effects and the importance of exposure timing.
- Further research is needed to fully understand BPA's impact on child neurodevelopment.
Introduction:
Early life exposure to bisphenol A (BPA), an endocrine disrupting chemical used in some food and beverage containers, receipts, and dental sealants, has been associated with anxiety and hyperactivity in animal studies. A few human studies also show prenatal and childhood BPA exposure to be associated with behavior problems in children.
Methods:
We measured BPA in urine from mothers during pregnancy and children at 5 years of age (N=292). Child behavior was assessed by mother and teacher report at age 7 years and direct assessment at age 9 years.
Results:
Prenatal urinary BPA concentrations were associated with increased internalizing problems in boys, including anxiety and depression, at age 7. No associations were seen with prenatal BPA concentrations and behaviors in girls. Childhood urinary BPA concentrations were associated with increased externalizing behaviors, including conduct problems, in girls at age 7 and increased internalizing behaviors and inattention and hyperactivity behaviors in boys and girls at age 7.
Conclusions:
This study adds to the existing literature showing associations of early life BPA exposure with behavior problems, including anxiety, depression, and hyperactivity in children. Additional information about timing of exposure and sex differences in effect is still needed.
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