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Am J Clin Nutr. 1989 Jun;49(6):1290-4.

Dietary fructose or starch: effects on copper, zinc, iron, manganese, calcium, and magnesium balances in humans.

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Vitamin and Mineral Nutrition Laboratory, Beltsville Human Nutrition Research Center, MD 20705.


A balance study was conducted to assess the effects of consuming low-copper diets, high in fructose or cornstarch. The study involved 19 apparently healthy males, aged 21-57 y. The two experimental diets averaged 0.35 mg Cu/1000 kcal and provided 20% of the calories from fructose or cornstarch. Cu, zinc, calcium, magnesium, and iron balances were determined 1 wk before the study (pretest) when the subjects consumed self-selected diets and after consuming the experimental diets for 6 wk. No major differences in mineral balances were evident between the two groups during the pretest study when the subjects ate self-selected diets. In contrast, when fed the test diets, the group consuming the low-Cu fructose diet had significantly more positive balances for all minerals studied than the group fed the low-Cu cornstarch diet. The results indicate that dietary fructose enhances mineral balance.

[Indexed for MEDLINE]

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