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Iron status in low birth weight infants on breast and formula feeding
Insights
Low birth weight infants fed breast milk exclusively are at higher risk for iron deficiency anemia. Early iron supplementation from 2 months is recommended for breastfed infants to prevent low iron status.
Area of Science:
- Pediatrics
- Neonatology
- Nutritional Science
Background:
- Low birth weight infants are at increased risk for nutritional deficiencies.
- Iron deficiency is a common concern in infant populations.
- Breast milk is a primary nutrition source for many infants.
Purpose of the Study:
- To compare the iron status of exclusively breastfed low birth weight infants with those fed iron-fortified formula.
- To determine the incidence of iron deficiency in these groups over the first six months of life.
- To establish optimal timing for iron supplementation in at-risk infants.
Main Methods:
- Longitudinal study of 15 low birth weight infants (1000-2499g) on breast milk.
- Comparison group of 30 low birth weight infants fed iron-fortified formula.
- No iron supplementation until iron deficiency developed; iron status assessed via serum ferritin and hemoglobin levels.
Main Results:
- Significantly higher incidence of iron deficiency at 6 months in breastfed infants (86%) versus formula-fed infants (33%).
- Breastfed infants showed significantly lower serum ferritin and hemoglobin levels after 4 months.
- Iron deficiency developed in a majority of exclusively breastfed low birth weight infants by 6 months.
Conclusions:
- Exclusively breastfed low birth weight infants face a substantially higher risk of developing iron deficiency.
- Iron supplementation should be initiated by 2 months of age for breastfed low birth weight infants.
- Current feeding practices may not adequately meet the iron needs of these vulnerable infants.
Abstract:
Iron status in 15 low birth weight infants, 1000-2499 g, on breast feeding was studied longitudinally for the first 6 months of age, and the findings compared to those of 30 low birth weight infants receiving a proprietary iron-fortified formula. The two groups received no iron supplement until they developed iron deficiency. The incidence of iron deficiency at 6 months was significantly greater in the breast-fed group than in the formula-fed group (86% v 33%). The breast-fed group had significantly lower serum ferritin and hemoglobin values after 4 months of age. The findings indicate that breast-fed low birth weight infants have a higher risk of developing iron deficiency and should receive iron supplementation from 2 months of age.