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Pollutants in breast milk

W J Rogan1

  • 1Office of Clinical Research, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA. rogan@niehs.nih.gov

Archives of Pediatrics & Adolescent Medicine
|September 1, 1996
PubMed
Summary
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Despite pesticide and pollutant chemicals found in breast milk, breastfeeding is recommended. While high exposure can cause poisoning, the benefits of breastfeeding outweigh the risks for most infants.

Area of Science:

  • Environmental Health
  • Toxicology
  • Pediatrics

Background:

  • Pesticide and industrial pollutant chemicals are commonly found in human breast milk globally.
  • Assessing the risks and benefits of breastfeeding in the context of chemical exposure is crucial for infant health.

Purpose of the Study:

  • To review existing data on the presence and toxicity of common pesticides and industrial pollutants in breast milk.
  • To evaluate the potential impact of these chemicals on breastfed infants.

Main Methods:

  • Utilized continuous automated literature surveillance and direct contact with investigators and governmental agencies.
  • Selected the most recent and largest datasets for occurrence data and primary reports for toxicity data.
  • Reexpressed data and rescaled concentrations as needed, contacting original investigators for clarification.

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Main Results:

  • Chemicals are frequently detected in human milk worldwide, but evidence of widespread infant illness is limited.
  • Documented cases of mass poisoning from breast milk transmission exist, alongside some evidence of developmental delays from prenatal exposure and lactation disruption.

Conclusions:

  • Breastfeeding is advised even with detected chemical residues, as benefits generally outweigh risks.
  • Prenatal exposure and the initiation of lactation may be sensitive periods for chemical toxicity.
  • Higher exposure levels pose a clear poisoning risk, but are rare.