Prenatal Phthalate Exposure Is Associated with Childhood Behavior and Executive Functioning
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- 1 April 2010
- journal article
- Published by Environmental Health Perspectives in Environmental Health Perspectives
- Vol. 118 (4), 565-571
- https://doi.org/10.1289/ehp.0901470
Abstract
Background Experimental and observational studies have reported biological consequences of phthalate exposure relevant to neurodevelopment. Objective Our goal was to examine the association of prenatal phthalate exposure with behavior and executive functioning at 4–9 years of age. Methods The Mount Sinai Children’s Environmental Health Study enrolled a multiethnic prenatal population in New York City between 1998 and 2002 (n = 404). Third-trimester maternal urines were collected and analyzed for phthalate metabolites. Children (n = 188, n = 365 visits) were assessed for cognitive and behavioral development between the ages of 4 and 9 years. Results In multivariate adjusted models, increased loge concentrations of low molecular weight (LMW) phthalate metabolites were associated with poorer scores on the aggression [β = 1.24; 95% confidence interval (CI), 0.15– 2.34], conduct problems (β = 2.40; 95% CI, 1.34–3.46), attention problems (β = 1.29; 95% CI, 0.16– 2.41), and depression (β = 1.18; 95% CI, 0.11–2.24) clinical scales; and externalizing problems (β = 1.75; 95% CI, 0.61–2.88) and behavioral symptom index (β = 1.55; 95% CI, 0.39–2.71) composite scales. Increased loge concentrations of LMW phthalates were also associated with poorer scores on the global executive composite index (β = 1.23; 95% CI, 0.09–2.36) and the emotional control scale (β = 1.33; 95% CI, 0.18– 2.49). Conclusion Behavioral domains adversely associated with prenatal exposure to LMW phthalates in our study are commonly found to be affected in children clinically diagnosed with conduct or attention deficit hyperactivity disorders.Keywords
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