Dietary fructose or starch: effects on copper, zinc, iron, manganese, calcium, and magnesium balances in humans.
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.
Holbrook
J T
JT
Vitamin and Mineral Nutrition Laboratory, Beltsville Human Nutrition Research Center, MD 20705.
Smith
J C
JC
Reiser
S
S
D000328:Adult; D002118:Calcium / Q000032:analysis / Q000378:metabolism; D003300:Copper / Q000008:administration & dosage* / Q000032:analysis / Q000378:metabolism; D004040:Dietary Carbohydrates / Q000494:pharmacology*; D005243:Feces / Q000032:analysis; D005632:Fructose / Q000494:pharmacology*; D006801:Humans; D007501:Iron / Q000032:analysis / Q000378:metabolism; D008274:Magnesium / Q000032:analysis / Q000378:metabolism; D008297:Male; D008345:Manganese / Q000032:analysis / Q000378:metabolism; D008875:Middle Aged; D008903:Minerals / Q000032:analysis / Q000378:metabolism*; D013213:Starch / Q000494:pharmacology*; D015032:Zinc / Q000032:analysis / Q000378:metabolism
D004040:Dietary Carbohydrates; D008903:Minerals; D005632:Fructose; D008345:Manganese; D003300:Copper; D013213:Starch; D007501:Iron; D008274:Magnesium; D015032:Zinc; D002118:Calcium