Gleerup A, Rossander-Hultén L, Hallberg L
Department of Internal Medicine, University of Göteborg, Sweden.
Eur J Clin Nutr. 1993 Dec;47(12):875-9.
We investigated the duration of the inhibitory effect of calcium from milk and cheese (340 mg) in a breakfast meal on non-haem iron absorption from a hamburger meal eaten 2 or 4 h after the breakfast. The effect of calcium on iron absorption was studied in 21 human subjects by using paired observations and a dual-radioisotope method (55Fe and 59Fe). No duration effect of calcium on iron absorption was observed in this study. The present findings offer an opportunity for theoretical improvement of iron nutrition by a redistribution of the daily intake of calcium to the meals with a minor iron content, i.e. breakfast and the evening meal.
我们研究了早餐中牛奶和奶酪所含340毫克钙的抑制作用持续时间，该作用针对早餐后2小时或4小时进食的汉堡餐中的非血红素铁吸收。通过配对观察和双放射性同位素方法（55Fe和59Fe），在21名人体受试者中研究了钙对铁吸收的影响。本研究未观察到钙对铁吸收的持续时间效应。目前的研究结果为通过将每日钙摄入量重新分配到铁含量较低的餐食（即早餐和晚餐）来从理论上改善铁营养提供了契机。
