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American Journal of Clinical Nutrition, Vol 57, 566-572, Copyright © 1993 by The American Society for Clinical Nutrition, Inc
ORIGINAL RESEARCH COMMUNICATIONS |
N Boukaiba, C Flament, S Acher, P Chappuis, A Piau, M Fusselier, M Dardenne and D Lemonnier
INSERM Unite 1, Paris, France.
Forty-four institutionalized elderly subjects with body mass indexes (BMI) of either > or = 24 or < or = 21 participated in a 16-wk crossover study designed to determine the effects of low-dose zinc supplementation [306 mumol (20 mg)/d] on food intake, anthropometry, and biochemical and immunological indexes. Initial serum zinc concentrations were low in both groups and increased by approximately 20% after zinc supplementation. Zinc supplementation allowed a partial but significant restoration of serum thymulin activity and improved nutritional status (food intake and serum albumin and transthyretin concentrations) but had no effect on anthropometric indexes or serum apolipoproteins, except apolipoprotein CII and apolipoprotein CIII. After zinc supplementation, serum copper concentration decreased but there was no change in the ratio of low-density-lipoprotein cholesterol to high-density-lipoprotein cholesterol. Low-dose zinc supplementation allows restoration, at least partially, of nutritional and thymic status without the known disadvantages of high doses of zinc.
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