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Relationship between dietary iron intake, corrected for diet reporting error, and serum ferritin in Danish women aged 35–65 years

Published online by Cambridge University Press:  09 March 2007

Berit Lilienthal Heitmann ,
Nils Milman  and
Gitte Laub Hansen
Berit Lilienthal Heitmann
Affiliation:
Danish Epidemiology Science Center at The Institute of Preventive Medicine, Copenhagen Hospital Corporation, Kommunehospitalet, Copenhagen, Denmark The Copenhagen County Centre of Preventive Medicine, Medical Department C, Glostrup Hospital, Denmark
Nils Milman
Affiliation:
The Copenhagen County Centre of Preventive Medicine, Medical Department C, Glostrup Hospital, Denmark Department of Medicine Y, Gentofte Hospital, University of Copenhagen, Denmark
Gitte Laub Hansen
Affiliation:
The Copenhagen County Centre of Preventive Medicine, Medical Department C, Glostrup Hospital, Denmark
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Abstract

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Several studies have failed to demonstrate an association between Fe status and intake of dietary Fe. However, in the long term, it Seems logical to presume that body Fe reserves are, fundamentally, dependent on the intake of bioavailpble dietary Fe. This discrepancy may depend on several factors(1)interindividual variation in biological availability of dietary Fe (differences in intestinal absorption),(2) interactions between dietary Fe and absorption enhancers and inbibitors, (3) variatiom in physiological (menstruation, childbirth) or unphysiological (blood donation) Fe losses, (4) the failure to adjust dietary intake data for Fe supplements, (5) uncertain food composition data (discrepancies between calculated and chemically measured Fe content inthe diet), and (6) diet reporting error (reported intake of dietary Fe may deviate considerably from the true intake). The present study examined associations between dietary intake of Fe (assessed by diet history interview) and Fe status (assessed by femtin status) among 167 Danish women aged 35–65 years, who were not blood donors, by taking into account diet reporting error (assessed from p-amino benzoic acid-validated urinary N), physiological blood losses (menstruation, Childbirth, abortions), and Fe supplementation. Our results indicate that the lack of a general association between Fe status and dietary Fe intake may, in part, be caused by selective dietreporting error.

Keywords

Dietary ironSerum ferritinDiet reporting error
Type
Iron intake and serum ferritin levels
Information
British Journal of Nutrition , Volume 75 , Issue 6 , June 1996 , pp. 905 - 913
Copyright
Copyright © The Nutrition Society 1996

References

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