Higher risk of zinc deficiency in New Zealand Pacific school children compared with their M?ori and European counterparts: a New Zealand national survey.


Gibson, RS; Bailey, KB; Parnell, WR; Wilson, N; Ferguson, EL; (2010) Higher risk of zinc deficiency in New Zealand Pacific school children compared with their M?ori and European counterparts: a New Zealand national survey. The British journal of nutrition. pp. 1-10. ISSN 0007-1145 DOI: https://doi.org/10.1017/S0007114510003569

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Abstract

Few multi-ethnic national surveys have examined Zn nutriture, despite its importance for optimal growth and development during childhood. We assessed the Zn status of urban and semi-urban children aged 5-15 years from three ethnic groups in New Zealand (NZ) in the 2002 Children's National Nutrition Survey and investigated the factors predisposing them to Zn deficiency. In a 10-month cross-sectional survey, Pacific and M?ori children were over-sampled permitting ethnic-specific analyses. Anthropometry, serum Zn and Zn intakes via 24 h recalls were measured. Anthropometric z scores were highest in Pacific children. Overall, mean adjusted serum Zn at 11 years was for males and females, respectively: 11·9 (95 % CI 11·5, 12·3) and 12·5 (95 % CI 12·0, 12·9) ?mol/l in NZ European and Other (NZEO) children (n 395); 11·9 (95 % CI 11·4, 12·4) and 12·0 (95 % CI 11·4, 12·5) ?mol/l in M?ori children (n 379); and 11·5 (95 % CI 11·1, 11·9) and 11·4 (95 % CI 11·1, 11·8) ?mol/l in Pacific children (n 589). The predictors of serum Zn were age, serum Se and sex for NZEO children; serum Se and age for Pacific children; and none for M?ori children. Pacific children had the highest prevalence of low serum Zn (21 (95 % CI 11, 30) %), followed by M?ori children (16 (95 % CI 12, 20) %) and NZEO children (15 (95 % CI 9, 21) %). Prevalence of inadequate Zn intakes, although low, reached 8 % for Pacific children who had the lowest Zn intake/kg body weight. Pacific boys but not girls with low serum Zn had a lower mean height-for-age z-score (P < 0·007) than those with normal serum Zn. We conclude that the biochemical risk of Zn deficiency in Pacific children indicates a public health problem. However, a lack of concordance with the risk of dietary Zn inadequacy suggests the need for better defined cut-offs in children.

Item Type: Article
Faculty and Department: Faculty of Epidemiology and Population Health > Dept of Population Health (2012- ) > Dept of Nutrition and Public Health Interventions Research (2003-2012)
Faculty of Epidemiology and Population Health > Dept of Population Health (2012- )
Research Centre: Centre for Maternal, Reproductive and Child Health (MARCH)
PubMed ID: 20854703
Web of Science ID: 287605400013
URI: http://researchonline.lshtm.ac.uk/id/eprint/1994

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