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Lack of adverse reactions to iron-fortified formula
S E Nelson1, E E Ziegler, A M Copeland
1Department of Pediatrics, College of Medicine, University of Iowa, Iowa City 52242.
Insights
Iron-fortified infant formula is safe, with no significant adverse effects on infant behavior or digestion. Studies show only stool color changes, not adverse reactions, when using iron-fortified formulas.
Area of Science:
- Pediatrics
- Infant Nutrition
- Clinical Research
Background:
- Physicians express concern regarding potential adverse reactions to iron-fortified infant formulas.
- Parental apprehension may influence the recommendation and use of these essential nutritional products.
Purpose of the Study:
- To investigate the actual incidence of adverse reactions in infants fed iron-fortified formulas compared to non-iron-fortified formulas.
- To provide evidence-based data to address physician reluctance concerning iron-fortified formula safety.
Main Methods:
- A crossover study design was employed, comparing infant outcomes during feeding periods with iron-fortified and non-iron-fortified formulas.
- Parental records documenting infant behavior (fussiness, cramps, regurgitation, flatus, colic) and stool characteristics were analyzed.
Main Results:
- No statistically significant differences in infant behavior or gastrointestinal symptoms were observed between the two feeding groups.
- The only significant difference noted was a change in stool color when infants consumed iron-fortified formulas.
Conclusions:
- Iron-fortified formulas do not appear to cause adverse behavioral or digestive issues in infants.
- The observed change in stool color is a known, benign effect of iron supplementation and should not be a cause for concern.
Abstract:
Some physicians are reluctant to recommend feeding of iron-fortified formulas to infants because of a fear of adverse reactions. In crossover studies, parents' records were compared with regard to their infant's behavior (fussiness, cramps, regurgitation, flatus, colic) and stool characteristics during periods when iron-fortified formulas were fed and periods when non-iron-fortified formulas were fed. No statistically significant feeding-related difference was noted except for stool color.