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Long-term neuroendocrine effects of iron-deficiency anemia in infancy

Barbara T Felt1, Patricio Peirano, Cecilia Algarín

  • 1Department of Pediatrics and Communicable Diseases, C.S. Mott Children's Hospital, University of Michigan, Ann Arbor, Michigan, USA. truefelt@umich.edu

Pediatric Research
|February 17, 2012
PubMed

Insights

Infancy iron-deficiency anemia (IDA) impacts neuroendocrine stress responses. Children with IDA showed altered cortisol patterns at age 10, indicating long-term effects on stress regulation.

Area of Science:

  • Neuroendocrinology
  • Developmental Pediatrics
  • Nutritional Neuroscience

Background:

  • Iron-deficiency anemia (IDA) has known long-term neurodevelopmental impacts.
  • Limited research exists on IDA's effects on neuroendocrine systems.

Purpose of the Study:

  • To investigate the long-term effects of early or later infancy IDA on cortisol and prolactin stress responses in 10-year-old children.
  • To compare neuroendocrine stress patterns in children with a history of IDA to those who were iron sufficient throughout infancy.

Main Methods:

  • Examined plasma cortisol and prolactin stress response patterns for 1 hour post-venipuncture and catheter placement.
  • Compared healthy 10-year-old Chilean children with IDA at 6 months (IDA-6) or 12 months (IDA-12) to iron-sufficient (IS) controls.
  • All participants received at least 6 months of oral iron treatment in infancy.

Main Results:

  • Children with IDA history (IDA-6 and IDA-12) exhibited altered cortisol response patterns at age 10.
  • IDA-12 children showed a blunted cortisol curvature and significantly lower cortisol levels at 30 and 45 minutes post-procedure compared to IS children.
  • No significant differences in stress-responsive plasma prolactin patterns were observed between groups.

Conclusions:

  • Infancy iron-deficiency anemia is associated with lasting neuroendocrine alterations in stress-responsive cortisol patterns.
  • These findings highlight the critical role of iron sufficiency during infancy for normal neuroendocrine development.
Abstract

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