Iron Absorption from the Whole Diet, Comparison of the Effect of Two Different Distributions of Daily Calcium Intake

Hypothesis - If a woman distributes her daily intake of calcium by having less of it in her lunch and dinner meals and more in her breakfast and evening meals, then this would reduce the inhibitory cause calcium has on heme put right and nonheme weightlift absorption.

Background study - This experiment is one of many that addresses calciums inhibitory affects on agitate absorption. In 1994, the Consensus Development Panel in Optimal calcium Intake suggested an plus of the current Recommended Dietary Allowances of calcium(Whiting, p.77). This goal of this increase was to aid in the prevention of osteoporosis and other bone diseases. Unfortunately, this act at prevention could have an adverse affect on the human bodys ability to absorb iron.

        Recent studies have shown that take a normal daily allowance of calcium cuts iron absorption by as much as 50-60%(Hallberg et al. p.118). opposite studies examine the affect of iron bioavailability on menstruating, pre-menopausal, and post-menopausal women(Rossander-Hulten et al and Gleerup et al). whizz of the fears of an increased amount of calcium intake is the increased disaster of anemia in women who are already susceptible to this condition. The iron inhibition by calcium is a classical case of how the correction of one nutritional problem can be the cause of another.

        The physiological mechanism of this calcium-iron relationship remains a mystery, however there are two feasible theories. superstar states that calcium competes for an iron binding site on enteral epithelial cells. It is believed calcium binds to the protein mobilferrin on the epithelial cells, which is the iron enrapture protein(Whiting, p.78). Another group of scientists theorizes that iron is able to be transported into the epithelial cells without problem, however the iron then has trouble getting into the line of work stream. The presence of calcium inhibits irons ability to leave...

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