A stable-isotope study of zinc, copper, and iron absorption and retention by young women fed vitamin B-6-deficient diets.
Am J Clin Nutr
; 54(6): 1059-64, 1991 Dec.
Article
em En
| MEDLINE
| ID: mdl-1957821
ABSTRACT
A 98-d study was conducted in young women to determine the effect of vitamin B-6-deficient diets on zinc, copper, and iron metabolism. Young women were fed vitamin B-6-deficient formula initially, followed by food diets containing four increasing amounts of vitamin B-6. Zinc, copper, and iron absorption, retention, and status were determined at intervals throughout the study. Zinc absorption and retention were greater during vitamin B-6 depletion but serum zinc declined, suggesting that absorbed zinc was not available for utilization. Copper absorption was lower during vitamin B-6 depletion but serum copper was not affected and balance was positive. Iron absorption was not impaired significantly by vitamin B-6-deficient diets but status may have declined. The results suggest that vitamin B-6 depletion of young women may alter zinc metabolism, inhibit copper absorption, and affect iron status. The effects of vitamin B-6 depletion differ markedly among these elements.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Deficiência de Vitamina B 6
/
Zinco
/
Cobre
/
Dieta
/
Ferro
Limite:
Adult
/
Female
/
Humans
Idioma:
En
Ano de publicação:
1991
Tipo de documento:
Article