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The effects of breastfeeding exclusivity on early childhood outcomes

Jade Marcus Jenkins1, E Michael Foster

  • 1Jade Marcus Jenkins is with the School of Education at the University of California, Irvine. At the time of the study, E. Michael Foster was with the Department of Health Care Organization and Policy, University of Alabama at Birmingham, Birmingham.

American Journal of Public Health
|December 21, 2013
PubMed

Insights

This study found minimal effects of breastfeeding duration and exclusivity on children's health and cognitive development. Benefits observed at age 4 were small and potentially explained by unmeasured factors.

Area of Science:

  • Pediatrics
  • Developmental Psychology
  • Public Health

Background:

  • Breastfeeding is widely recommended for its potential health and cognitive benefits.
  • Understanding the specific impact of breastfeeding exclusivity and duration is crucial for public health guidelines.

Purpose of the Study:

  • To investigate the association between breastfeeding exclusivity and duration with child health and cognitive outcomes.
  • To assess these outcomes at ages 2 and 4 years.

Main Methods:

  • Utilized data from the Early Childhood Longitudinal Study-Birth Cohort (N=10,700).
  • Employed propensity score analysis to control for confounding variables.
  • Focused on child assessments at ages 2 and 4 years.

Main Results:

  • Small effects of breastfeeding were observed on reading and cognitive outcomes at age 4, but not at age 2.
  • No consistent evidence of dosage effects for breastfeeding exclusivity was found.
  • Sensitivity analyses suggested unobserved confounding might explain observed benefits.

Conclusions:

  • Breastfeeding exclusivity and duration showed little to no significant effect on key child health and cognitive outcomes.
  • The findings suggest that other factors may play a more substantial role in child development.
Abstract

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