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Analysis of Environmental Determinants of Heme and Nonheme Iron Intake in a National Sample of Polish Adolescents

Author

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  • Dominika Skolmowska

    (Department of Dietetics, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences (WULS-SGGW), 159C Nowoursynowska Street, 02-776 Warsaw, Poland)

  • Dominika Głąbska

    (Department of Dietetics, Institute of Human Nutrition Sciences, Warsaw University of Life Sciences (WULS-SGGW), 159C Nowoursynowska Street, 02-776 Warsaw, Poland)

Abstract

Intake of sufficient amounts of iron by adolescents is a matter of great concern. Therefore, it is crucial to determine the factors that may influence iron intake in this specific population. The present study aimed to analyze the environmental determinants of the intake of heme and nonheme iron in a national homogenous sample of Polish adolescents. Adolescents (aged 15–20 years) were randomly chosen from all the regions of Poland by performing a sampling of secondary schools (random quota sampling). The total iron intake, as well as the intake of heme iron, nonheme iron, animal iron, plant iron, and iron from various food products, was assessed among 1385 female respondents and 1025 male respondents using the validated IRON Intake Calculation—Food Frequency Questionnaire (IRONIC-FFQ). The intake was compared between the subgroups stratified by meat intake in the region, gross domestic product (GDP) in the region, and size of the city (rural vs. urban environment). It was observed that meat intake in the region did not influence the intake of total iron, as well as the intake of heme iron, nonheme iron, animal iron, plant iron, and iron from various food products ( p > 0.05). However, GDP and the size of the city were determined as the most influencing factors, as they were associated with iron intake in both female and male adolescents, with the most prominent differences between the subgroups found in the case of females. Female adolescents from high-GDP regions had significantly higher intake of heme iron ( p = 0.0047) and animal iron ( p = 0.0029), and lower intake of nonheme iron compared to those from low-GDP regions ( p = 0.0342). The total iron intake was higher among female adolescents who were from medium cities than those from big cities ( p = 0.0350), but significantly higher animal iron intake ( p = 0.0404) and plant iron intake ( p = 0.0385) were observed among females from villages and small towns compared to females from other groups. Based on the results, it may be concluded that size of the city and the economic status of the region are the most important environmental determinants of iron intake in adolescents and, hence, they should be taken into account while developing educational programs, especially for the female adolescent population.

Suggested Citation

  • Dominika Skolmowska & Dominika Głąbska, 2021. "Analysis of Environmental Determinants of Heme and Nonheme Iron Intake in a National Sample of Polish Adolescents," IJERPH, MDPI, vol. 18(10), pages 1-16, May.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:10:p:5252-:d:554989
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    References listed on IDEAS

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    1. Catherine Paquet, 2019. "Environmental Influences on Food Behaviour," IJERPH, MDPI, vol. 16(15), pages 1-4, August.
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