Effects of weaning cereals with different phytate contents on hemoglobin, iron stores, and serum zinc: a randomized intervention in infants from 6 to 12 mo of age
2003 (English)In: American Journal of Clinical Nutrition, ISSN 0002-9165, Vol. 78, no 1, 168-175 p.Article in journal (Refereed) Published
Background: Weaning foods frequently contain phytate, an inhibitor of iron and zinc absorption, which may contribute to the high prevalence of iron and zinc deficiency seen in infancy. Objective: The objective was to investigate whether either an extensive reduction in the phytate content of infant cereals or the use of milk-based, iron-fortified infant formula would improve iron and zinc status in infants. Design: In a double-blind design, infants (n = 300) were randomly assigned to 3 cereal groups from 6 to 12 mo of age: commercial milk-based cereal drink (MCD) and porridge (CC group), phytate-reduced MCD and phytate-reduced porridge (PR group), or milk-based infant formula and porridge with the usual phytate content (IF group). Venous blood samples were collected at 6 and 12 mo. Dietary intake was recorded monthly. After the intervention, 267 infants remained in the analysis. Results: Hemoglobin concentrations of less than 110 g/L, serum ferritin concentrations of less than 12 mug/L, and serum zinc concentrations of less than 10.7 mumol/L had overall prevalences at baseline and 12 mo of 28% and 15%, 9% and 18%, and 22% and 27%, respectively. After the intervention, there were no significant differences in any measure of iron or zinc status between the CC and the PR groups. However, hemoglobin was significantly higher (120 g/L compared with 117 g/L; P = 0.012) and the prevalence of anemia was lower (13% compared with 23%; P = 0.06) in the PR group than in the IF group, which could be explained by differences in daily iron intake between the 2 groups. Conclusion: Extensive reduction in the phytate content of weaning cereals had little long-term effect on the iron and zinc status of Swedish infants.
Place, publisher, year, edition, pages
2003. Vol. 78, no 1, 168-175 p.
infants; cereals; iron; zinc; phytate; randomized controlled trial; weaning; Sweden
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-53549OAI: oai:DiVA.org:liu-53549DiVA: diva2:289428