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Plasma zinc and hair zinc levels, anthropometric status and food intake of children in a rural area of Brazil
OBJECTIVE: The objective of this study was to investigate the levels of plasma zinc, hair zinc, growth and food consumption in children aged 6 to 24 months in a rural area of Diamantina (MG), Brazil. METHODS: Plasma and hair zinc concentrations were analyzed using flame atomic absorption spectrometr...
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Published in: | Revista de Nutrição 2010-02, Vol.23 (1), p.75-83 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
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Summary: | OBJECTIVE: The objective of this study was to investigate the levels of plasma zinc, hair zinc, growth and food consumption in children aged 6 to 24 months in a rural area of Diamantina (MG), Brazil. METHODS: Plasma and hair zinc concentrations were analyzed using flame atomic absorption spectrometry and neutron activation analysis, respectively. Weight-for-age, weight-for-height and height-for-age, expressed as Z-scores, were measured according to the World Health Organization reference curves. Dietary zinc intake was determined by a 3-day dietary recall filled out by the mother or guardian. RESULTS: Zinc deficiency was found in 11.2% and 16.8% of the children according to plasma zinc e hair zinc levels, respectively. Mean plasma zinc and hair zinc for children 11 (127) months of age were 15.4 (SD=4.2) µmol L-1 and 139.5 (SD=72.1) µg g-1 and 16.0 (SD=4.5) µmol L-1 and 134.3 (SD=110.3) µg g-1, respectively. Anthropometric measurements showed that 8.0%, 6.8% and 3.4% of the children were underweight, stunted and wasted, respectively. The mean dietary intake of zinc was 3.2 (SD=2.3) mg/day. One-third of the children did not eat enough foods that contain zinc. There were no correlations among plasma zinc level, hair zinc level, anthropometric parameters and zinc intake. CONCLUION: The results demonstrate that zinc deficiency is a problem in the studied population, not just in malnourished children. Nutritional care should be provided for this population in order to improve their consumption of high-zinc foods and monitor zinc deficiency.
OBJETIVO: Investigar níveis plasmáticos de zinco, concentração de zinco capilar, crescimento físico, e consumo de zinco em crianças de 6 a 24 meses da região de Diamantina (MG), Brasil. MÉTODOS: As concentrações de zinco plasmático e zinco capilar foram analisadas empregando as técnicas de espectrometria atômica de absorção e de ativação neutrônica, respectivamente. Peso-para-idade, peso-para-altura e altura-para-idade, expressos em escore-Z, foram medidos, de acordo as curvas de referência da Organização Mundial de Saúde. O zinco dietético dos sujeitos foi avaliado a partir de três registros alimentares, preenchidos pelas mães ou responsáveis. RESULTADOS: A deficiência de zinco foi observada em 11,2% e em 16,8% das crianças, segundo os níveis de zinco plasmático e zinco capilar, respectivamente. As médias em crianças com 11 meses ou menos (49) e 11 (127) meses ou mais de idade para níveis de zinco plasmático e |
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ISSN: | 1415-5273 1678-9865 1415-5273 |
DOI: | 10.1590/S1415-52732010000100009 |