Zinc nutritional status in obese children and adolescents |
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Authors: | Marreiro Dilina do Nascimento Fisberg Mauro Cozzolino Silvia Maria Franciscato |
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Institution: | Department of Food Science and Experimental Nutrition, School of Pharmacy, University of S?o Paulo, Brazil. |
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Abstract: | Studies in animals and humans have corroborated that zinc (Zn) metabolism is altered in obesity. The present work intends
to evaluate the Zn nutritional status in obese children and adolescents by the determination of some biochemical parameters
and analyses of the diets. The investigation was carried out in a group of obese children and adolescents (n=23) and compared to a control group (n=21), both between 7 and 14 yr of age. A software analyzed diet information from 3-d food records. Body composition was evaluated
by body mass index, bioelectrical impedance, and skinfold measurements. Zinc nutritional status was evaluated by Zn determination
in plasma, erythrocyte, and 24-h urine, by atomic absorption spectrophotometry (γ=213.9 nm). Diets consumed by both groups
had marginal concentrations of zinc. Zinc concentrations in plasma and erythrocytes were significantly lower in the obese
group. Urinary zinc excretion was significantly higher in the same group. The results allowed one to conclude that zinc nutritional
status in obese individuals is altered. |
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Keywords: | Zinc obesity adolescent nutrition child nutrition nutritional status |
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