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A comparison of iron absorption from single meals and daily diets using radioFe (55Fe, 59Fe)

Published online by Cambridge University Press:  09 March 2007

Per Tidehag ,
Goran Hallmans ,
Kenneth Wing ,
Rolf Sjöström ,
Goran ÅGren ,
Eva Lundin  and
Jie-xian Zhang
Per Tidehag
Affiliation:
the Departments ofNutritional Research Prosthetic Dentistry
Goran Hallmans
Affiliation:
the Departments ofNutritional Research Pathology, Umeaå University, Umeaå, Sweden
Kenneth Wing
Affiliation:
Oral Radiology
Rolf Sjöström
Affiliation:
TheBiophysics
Goran ÅGren
Affiliation:
2Radiophysics Laboratories
Eva Lundin
Affiliation:
the Departments ofNutritional Research Pathology, Umeaå University, Umeaå, Sweden
Jie-xian Zhang
Affiliation:
the Departments ofNutritional Research Pathology, Umeaå University, Umeaå, Sweden
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Abstract

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Abstrac:

The purpose of the present study was to compare two measures of Fe absorption, one from single meals and the other from daily diets. Ten ileostomy subjeets were given the same low-fibre composite diet for all three meals each day for five consecutive days. After 3 weeks the experiment was repeated with a high- fibre diet. The morning meal constituted one-seventh of the total daily diet intake, the mid-day meal two- sevenths and the evening meal four-sevenths of the total daily diet intake. On days 4 and 5 of each diet period the morning meal was labelled with 55Fe and all three meals were labelled with 59Fe. The activities retained in the subjects 19 d later showed the Fe absorption from the low-fibre diet measured from the morning meals to be almost 80 % greater than the average Fe absorption measured from all meals during the same 2 d. With the high-fibre diet the absorption from the morning meals was less than 50 % greater than the average for all meals but the difference was not significant. We suggest that all meals of the day should be labelled with radioFe in order to avoid inflating the measures of Fe absorption.

Keywords

IronNon-haem-ironIleostomy
Type
Mineral absorption
Information
British Journal of Nutrition , Volume 75 , Issue 2 , February 1996 , pp. 281 - 289
Copyright
Copyright © The Nutrition Society 1996

References

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