Abstract
This paper reports the results from a longitudinal study on iron status and diet among Norwegian and immigrant children living in the same residential area. This was the second part of the study and the children were two years old. All mothers with a normal pregnancy and delivery were invited to participate, and 80 of 95 eligible, accepted. Iron status analyses were carried out for 78 healthy children; 37 Norwegians and 4 1 immigrants (20 of Turkish origin). More immigrant children had depleted iron stores, compared to Norwegians. The median values for haemoglobin (Hb), mean corpuscular volume (MCV), mean corpuscular haemoglobin (MCH), serum ferritin (SF), transferrin saturation (TfS), free erythrocyte protoporphyrin (FEP) and transferrin receptor (TfR) were all within normal ranges. The differences between immigrants and Norwegians were significant except for Hb and SF. There was a rise in MCV and TfS and a decline in TfR among both Norwegian and immigrant children from one to two years, and a decline in SF among the Norwegians. The Norwegian children had a higher intake of soft drinks, dark bread and different iron-rich bread spreads than the immigrants, who had a higher intake of orange juice, and a more frequent use of citrus fruits than the Norwegians. Milk intake was negatively related – and consumption frequency of brown whey cheese was positively related – to iron stores indicated by SF values above or below 15 pg/L. The results suggest that differences in food intake may explain the lower iron status in immigrants compared to Norwegians. More attention should be directed to children's diet and iron status in the second and probably third years of life
Highlights
Infants and young children are at especially high risk of developing iron deficiency because of high requirementscorresponding'to basal losses, expansion of red cell mass and rapid growth of body tissues (1)
The results suggest that differences in food intake may explain the lower iron status in immigrants compared to Norwegians
The results indicated loweriron statusamong immigrantinfants than among Norwegian infants and there were differences in the weaning practices and in the use of certain foods, which may explain the differences in iron status
Summary
This paper reports the results from a longitudinal study on iron status and diet among Norwegian and immigrant children living in the sameresidential area.This was the secondpart of the study and the children were two years old. There was a rise in MCV and TfS and a decline in TfR among both Norwegian and immigrant children from one to two years, and a decline in SF among the Norwegians. The results suggest that differences in food intake may explain the lower iron status in immigrants compared to Norwegians. Jernstatus og kosthold ved to drs alder: en longitudinell studiepd friske norske barn og barnmed innvandrerbakgrunn. MBlet med denne delen av studien var ii se om det var forskjeller ijernstatus ved to Ar; ii belyse endring ijernstatus fra ett ti1to Ars alder; og B belyse aspekter ved kostholdet som kan ha betydning for jernstatus. Fra ett ti1to Ars alder var det en signifikant gkning i MCV og TfS, senkning i TfR bide blant norske og innvandrere, og en tendens ti1senkning i serum ferritin (p=0.06) blant norske barn. Inntaket av melk var negativt relatert og inntaket av brunost var positivt relatert ti jernlagrene (SF over eller under 15 pg/L) i en logistisk regresjonsmodell
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