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Risk factors for poor iron status in British toddlers: further analysis of data from the National Diet and Nutrition Survey of children aged 1.5–4.5 years

Published online by Cambridge University Press:  02 January 2007

CW Thane ,
CM Walmsley ,
CJ Bates ,
A Prentice  and
TJ Cole
CW Thane*
Affiliation:
MRC Human Nutrition Research, Downhams Lane, Milton Road, Cambridge CB4 1XJ, UK
CM Walmsley
Affiliation:
MRC Human Nutrition Research, Downhams Lane, Milton Road, Cambridge CB4 1XJ, UK
CJ Bates
Affiliation:
MRC Human Nutrition Research, Downhams Lane, Milton Road, Cambridge CB4 1XJ, UK
A Prentice
Affiliation:
MRC Human Nutrition Research, Downhams Lane, Milton Road, Cambridge CB4 1XJ, UK
TJ Cole
Affiliation:
MRC Human Nutrition Research, Downhams Lane, Milton Road, Cambridge CB4 1XJ, UK
*
*Corresponding author: Email [email protected]
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Abstract

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Objective

To examine risk factors for poor iron status in British toddlers.

Design

National Diet and Nutrition Survey (NDNS) of children aged 1.5–4.5 years.

Setting

Mainland Britain, 1992/93.

Subjects

Of the 1859 children whose parents or guardians were interviewed, a weighed dietary intake was provided for 1675, and a blood sample obtained from 1003.

Results

Mean haemoglobin (Hb) and ferritin levels were significantly lower in younger (1.5–2.5 years) than in older (3.5–4.5 years) children, with boys having significantly lower ferritin levels than girls. Poor iron status (Hb>110 g l−1, ferritin >10 μg l−1, or low values for both indices) was associated with lower socioeconomic and employment status. Iron status was directly associated with meat and fruit consumption and inversely with that of milk and milk products, after adjustment for age and gender. The latter association remained significant after further adjustment for sociodemographic variables, energy intake and body weight. Children consuming <400 g day−1 of milk and cream were less likely to consume foods in other groups, with those also consuming little meat, fish, fruit and nuts at greatest risk of poor iron status. Few associations were observed between poor iron status and individual nutrient intakes, and iron status was not associated with either iron intake or with consumption of a vegetarian diet.

Conclusions

Overdependence on milk, where it displaces iron-rich or iron-enhancing foods, may put toddlers at increased risk of poor iron status. However, this becomes non-significant when moderate-to-high amounts of foods known to enhance iron status (e.g. meat and/or fruit) are also consumed. Milk consumption in this age group should ideally be part of a mixed and balanced diet including all food groups, and particularly lean meat (or other iron-rich or fortified foods) and fruit. This is particularly relevant for households of lower socioeconomic and employment status.

Keywords

ToddlersIron statusRisk factorsMilk consumption
Type
Research Article
Information
Public Health Nutrition , Volume 3 , Issue 4 , December 2000 , pp. 433 - 440
Copyright
Copyright © CABI Publishing 2000

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