Body Mass Index in Young School-Age Children in Relation to Organochlorine Compounds in Early Life: A Prospective Study

Int J Obes (Lond). 2014 Jul;38(7):919-25. doi: 10.1038/ijo.2014.58. Epub 2014 Apr 10.

Abstract

Objective: To investigate the association between maternal pregnancy and estimated postnatal serum concentrations of the organochlorines 2,2',4,4',5,5'-hexachlorobiphenyl (CB-153) and 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p,p'-DDE) and body mass index (BMI) z-scores in 5- to 9-year-old children.

Methods: Maternal sera from the INUENDO birth cohort (2002-2004) comprising mother-child pairs (N=1109) from Greenland, Warsaw (Poland), and Kharkiv (Ukraine) were analysed for CB-153 and p,p'-DDE, using gas chromatography-mass-spectrometry, and were grouped into tertiles for statistical analyses. A toxicokinetic model was used to estimate the first 12 months cumulative exposure to the compounds. Associations between these compounds and child age- and sex-specific BMI z-scores were calculated at follow-up (2010-2012), using multiple linear regression analysis.

Results: No clear associations between pregnancy CB-153 and p,p'-DDE and child BMI were observed (the pooled differences in BMI z-score (95% confidence interval) comparing 3rd tertile to 1st tertile were -0.07 (-0.32 to 0.18) and -0.10 (-0.30 to 0.10) kg m(-2), respectively). For postnatal CB-153 and p,p'-DDE and BMI, the overall differences in BMI z-score comparing 3rd tertile to 1st tertile were 0.12 (-0.15 to 0.39) and -0.03 (-0.20 to 0.27) kg m(-2), respectively.

Conclusions: This follow-up study of Greenlandic, Polish and Ukrainian populations showed no clear association between pregnancy and postnatal exposure to p,p'-DDE and CB-153 and BMI at the age of 5-9 years.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Body Mass Index
  • Child
  • Child, Preschool
  • DDT / adverse effects
  • Environmental Exposure / adverse effects*
  • Environmental Pollutants / adverse effects*
  • European Continental Ancestry Group*
  • Female
  • Follow-Up Studies
  • Greenland / epidemiology
  • Humans
  • Hydrocarbons, Chlorinated / adverse effects*
  • Male
  • Mothers*
  • Poland / epidemiology
  • Polychlorinated Biphenyls / adverse effects
  • Pregnancy
  • Prenatal Exposure Delayed Effects*
  • Prospective Studies
  • Ukraine / epidemiology

Substances

  • Environmental Pollutants
  • Hydrocarbons, Chlorinated
  • DDT
  • Polychlorinated Biphenyls