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American Journal of Clinical Nutrition, Vol 42, 454-461, Copyright © 1985 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

The effects of inorganic chromium and brewer's yeast on glucose tolerance, plasma lipids, and plasma chromium in elderly subjects

EG Offenbacher, CJ Rinko and FX Pi-Sunyer

Twenty-three healthy, well-nourished, free-living elderly volunteers were given daily, for 10 wk, 5 g brewer's yeast, 200 micrograms Cr3+ as chromic chloride (CrCl3), or placebo. There were no significant changes in glucose tolerance, insulin, cholesterol or triglycerides after supplementation in any of the three groups. Plasma Cr3+ rose significantly after supplementation with CrCl3 but did not change after yeast or placebo supplementation. Plasma Cr3+ did not increase after an oral glucose load and did not correlate with glucose, insulin or lipid values in any of the groups. Calculated intakes of eight indicator nutrients were well above 100% of the RDA except for calcium. These healthy elderly persons, eating nutritious diets, are not at risk for Cr3+ deficiency as measured by the absence of a clinical response to CrCl3 or brewer's yeast supplementation. This study suggests that age per se is not a factor leading to Cr deficiency.


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