Related Experiment Videos
High absorption of fortification iron from current infant formulas
E Hertrampf1, M Olivares, F Pizarro
1Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile, Santiago.
Journal of Pediatric Gastroenterology and Nutrition
|October 21, 1998
Summary
Iron absorption from modern infant formulas is significantly higher than previously estimated. This suggests current iron fortification levels in formulas may be excessive, potentially allowing for reduction.
Area of Science:
- Nutritional Science
- Pediatric Nutrition
- Iron Metabolism
Background:
- Iron absorption data for infant formulas is outdated, relying on 20-year-old studies.
- Recent modifications to infant formulas may impact iron bioavailability, necessitating updated research.
Purpose of the Study:
- To assess iron bioavailability from current infant formulas.
- To compare iron absorption from various infant formulas against cow's milk.
Main Methods:
- Used isotopically labeled iron (55Fe and 59Fe) to measure bioavailability.
- Administered formulas to adult women (30-50 years) and compared results to a reference dose.
Main Results:
- Infant formulas demonstrated significantly higher iron bioavailability (19%) compared to cow's milk (4%).
- Follow-on formula showed intermediate iron absorption (13%).
- Formulas with 7-8 mg/l iron provide adequate absorbed iron for most infants, while 12 mg/l may exceed requirements.
Conclusions:
- Current infant formulas exhibit high iron bioavailability.
- The high bioavailability supports consideration for reducing iron fortification levels in infant formulas.