Feeding Infants With Extra Iron Might Delay Their Development

by Sreeraman on  May 05, 2008 at 5:40 PM Child Health News
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Feeding your infants with extra iron when they don't need it might hinder their development, says a new study.

The new study from University of Michigan on 494 Chilean children has sparked off debate over optimal iron supplement levels.

"Our results for 25 years of research show problems with lack of iron. For us to find this result is a big deal, it's really unexpected," said Dr. Betsy Lozoff, principal investigator and research professor at the Centre for Human Growth and Development.

US infant formulas typically come fortified with 12 mg/L of iron to prevent iron-deficiency anaemia. Europe generally uses a lower amount.

Iron-deficiency anaemia is linked to poorer development, and during pregnancy it contributes to anaemia in mothers, contributing to premature birth, low birth weight and other complications.

"I thought that behaviour and development would be better with the 12 mg formula," said Lozoff, also professor of pediatrics in the U-M Department of Pediatrics and Communicable Diseases at the Medical School and C.S. Mott Children's Hospital.

The findings revealed those who received iron fortified formula in infancy at the 12 mg used in the US lagged behind those who received low-iron formula in cognitive and visual-motor development by age 10 years.

Lozoff stressed that most children who received the 12 mg formula did not show lower scores. But the 5 percent of the sample with the highest haemoglobin levels at 6 months showed the poorest outcome.

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