Prenatal Exposure to PAHs and Cognitive Development in Toddlers
Author Information
Author(s): Tillett Tanya
Primary Institution: Columbia Center for Children’s Environmental Health
Hypothesis
Does prenatal exposure to airborne polycyclic aromatic hydrocarbons (PAHs) affect cognitive development during childhood?
Conclusion
Children with higher prenatal exposure to PAHs scored lower on cognitive tests at age 3 and had increased odds of developmental delay.
Supporting Evidence
- Children with higher prenatal exposure to PAHs scored on average 5.69 points lower on cognitive tests.
- The higher-exposed children had twice the odds of developmental delay.
- The study monitored mothers' air exposures during the third trimester.
Takeaway
Breathing in certain air pollutants before birth can make kids struggle more with thinking and learning when they grow up.
Methodology
The study involved monitoring air exposure during pregnancy and assessing children's cognitive development at ages 1, 2, and 3.
Limitations
Small sample size, lack of air monitoring data for all trimesters, and lack of postnatal data for PAH concentrations and lead exposure.
Participant Demographics
Children of nonsmoking women living in urban neighborhoods of New York City.
Statistical Information
Statistical Significance
p<0.05
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