Prenatal exposure to phthalates and emotional/behavioral development in young children

Liron Cohen-Eliraz1, Asher Ornoy2, Eliana Ein-Mor3

  • 1Psychology Department Hebrew University of Jerusalem, Jerusalem, Israel.

Neurotoxicology
|August 3, 2023
PubMed

Insights

Prenatal exposure to Di-(2-ethylhexyl) phthalate (DEHP) is linked to emotional and behavioral issues in 24-month-old boys. High DEHP exposure in mothers correlated with lower social skills and increased internalizing and externalizing problems in male toddlers.

Area of Science:

  • Environmental Health
  • Developmental Pediatrics
  • Toxicology

Background:

  • Endocrine disrupting chemicals (EDCs) like phthalates are ubiquitous environmental contaminants.
  • Prenatal exposure to EDCs has been suggested to correlate with adverse neurodevelopmental outcomes, including behavioral difficulties in children.

Purpose of the Study:

  • To investigate the association between intrauterine phthalate exposure and the emotional and behavioral development of toddlers at 24 months of age.

Main Methods:

  • Maternal urine samples were collected during early gestation (11-18 weeks) and analyzed for phthalate metabolites (DEHP, DiNP, MBzBP).
  • Offspring development and behavior were assessed at 24 months using standardized maternal reports (CBCL, ASQ-3, HOME questionnaires).
  • Multivariate General Linear Models (GLM) were employed to analyze associations between phthalate metabolite levels and developmental outcomes.

Main Results:

  • Maternal exposure to Di-(2-ethylhexyl) phthalate (DEHP) was significantly associated with behavioral and developmental outcomes exclusively in boys.
  • Boys with high prenatal DEHP exposure exhibited lower scores in personal-social abilities (ASQ-3) compared to those with low exposure.
  • High DEHP exposure in boys was linked to increased internalizing problems (e.g., emotional reactivity, anxiety, depression) and externalizing problems.

Conclusions:

  • Maternal DEHP metabolite concentrations in early pregnancy are associated with emotional and behavioral developmental problems in 24-month-old boys.
  • These findings support growing evidence of DEHP as a potentially harmful chemical, necessitating environmental vigilance.
  • The study highlights sex-specific effects of prenatal phthalate exposure on child development.
Abstract

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