PMID: 2484367Sep 1, 1988Paper

Copper absorption in young men fed adequate and low zinc diets

Biological Trace Element Research
J R TurnlundL L Acord

Abstract

Copper absorption was measured at two levels of dietary zinc in six healthy young men who were confined to a metabolic unit for a 75 d study of zinc utilization. A diet of conventional foods was fed, providing either 16.5 or 5.5 mg zinc and 1.3 mg copper daily. Copper absorption was determined by feeding 65Cu, a stable isotope of copper, once during the 16.5 mg Zn diet and near the beginning and end of the 5.5 mg Zn diet. Apparent copper absorption averaged 48.1% when the 16.5 mg Zn diet was fed. This was significantly higher than the averages of 37.2 and 38.5% when the 5.5 mg Zn diet was fed. Absorption also differed significantly among subjects. Fecal copper did not differ between diets or among subjects. All subjects were in positive copper balance at both levels of dietary zinc. These results suggest that a dietary zinc intake slightly above the Recommended Dietary Allowance of 15 mg/d does not increase fecal copper loss and does not interfere with copper absorption.

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Citations

Aug 18, 2001·The British Journal of Nutrition·B Sandström
Jul 8, 2003·The British Journal of Nutrition·Linda J HarveySusan J Fairweather-Tait
Jan 1, 1993·Nutrition Research Reviews·B SandströmW van Dokkum
Jan 1, 1991·Critical Reviews in Food Science and Nutrition·J R Turnlund
Sep 14, 2006·Journal of Nutritional Science and Vitaminology·Yuki ItoToshitaka Nabeshima
Jan 1, 1994·Critical Reviews in Clinical Laboratory Sciences·S K AggarwalD A Herold
Jun 1, 1996·Journal of Trace Elements in Medicine and Biology : Organ of the Society for Minerals and Trace Elements (GMS)·E KnudsenP Solgaard
Aug 15, 2000·Journal of Pediatric Gastroenterology and Nutrition·M OlivaresR Uauy
May 23, 2001·Experimental Biology and Medicine·K Y Patterson, C Veillon
Jun 26, 1999·Journal of Toxicology. Clinical Toxicology·D G Barceloux

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