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Plasma phthalate levels in children with speech delay.

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Environmental pollutants called phthalates may increase the risk of speech delay in children. Higher levels of certain phthalates were found in children with speech delay, suggesting a potential link. Further research is needed.

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Area of Science:

  • Environmental Health
  • Pediatric Development
  • Toxicology

Background:

  • Speech delay is a common developmental concern in children.
  • Phthalates, endocrine-disrupting environmental pollutants, are suspected risk factors for developmental issues.

Purpose of the Study:

  • To investigate the association between phthalate exposure and speech delay in children.
  • To compare phthalate levels in children with and without speech delay.

Main Methods:

  • A case-control study involving 50 children with isolated speech delay and 40 healthy controls.
  • Assessment of speech delay risk factors and phthalate exposure sources.
  • Quantification of plasma phthalate levels (di-(2-ethylhexyl) phthalate (DEHP), mono-(2-ethylhexyl) phthalate (MEHP), and dibutyl phthalate (DBP)) using high-pressure liquid chromatography.

Main Results:

  • Plasma levels of MEHP and DBP were significantly higher in children with speech delay compared to controls (p < 0.001).
  • DEHP levels did not show a significant difference between the groups (p = 0.233).
  • Adjusted analyses using multiple linear regression confirmed higher MEHP and DBP levels in the speech delay group.

Conclusions:

  • Elevated plasma levels of MEHP and DBP in children with speech delay suggest phthalate exposure may be a contributing risk factor.
  • Further epidemiological research is warranted to confirm the link between phthalate exposure and speech delay.