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ARS Home » Plains Area » Grand Forks, North Dakota » Grand Forks Human Nutrition Research Center » Healthy Body Weight Research » Research » Publications at this Location » Publication #83962
Title: LETTER TO THE EDITOR - AM J CLIN NUTR

Author
item Hunt, Janet
item Johnson, Phyllis

Submitted to: The American Journal of Clinical Nutrition
Publication Type: Abstract Only
Publication Acceptance Date: 3/17/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Research supports increasing women's calcium intakes, either through dietary sources or supplementation, to increase and maintain bone mass, and reduce the risk of osteoporosis. Because of interest in the possible adverse affects of calcium supplementation on zinc absorption, this letter provides observations from a metabolic study at the Grand Forks Human Nutrition Research Center on the effect of added calcium on zinc balance. In a 2 X 2 factorial study of the effects of dietary calcium and manganese on calcium and manganese balance, 14 young adult women (age 27 +/- 7 y) consumed diets containing 10.8 mg zinc and 587 mg calcium daily. Zinc balance was determined during the last 12 d of 39-d controlled diets periods. Zinc balance was not significantly affected when the diets were supplemented with 750 mg calcium as calcium lactate. Current absorption and balance data do not support public advice for users of calcium supplements to also supplement with zinc.