Supplementing Eggshell Calcium to Inhibit Iron?

narouz

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Joined
Jul 22, 2012
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4,429
For some reason this never occurred to me.
But just reading some of the threads about calcium,
and how taking about 1/4 teaspoon eggshell calcium x3 per day yields about 2000mgs...

Often when I have meat it is inconvenient to have coffee or tea.
Whereas popping a little capsule of eggshell calcium would be easy.

For those, of course, who wish to lower/control their iron levels.

Here is a study showing that calcium at meals does inhibit iron.
Final paragraph:


By and large, studies on the effect of calcium on iron absorption
based on direct measurements of iron absorption show that
calcium inhibits iron absorption. The exceptions reported can be
explained. Failure of the effect of calcium, when comparisons
are based on changes in concentration of serum ferritin, can be
explained by the fact that a long time and large amounts of materials
are required to show the effect. The balance of evidence
thus clearly indicates that calcium in amounts present in many
meals inhibits the absorption of both heme and nonheme iron. A
practical conclusion is that those with high iron requirements
(eg, adolescents and menstruating and pregnant women) should
try to restrict calcium intake with main meals, which contain
most of the dietary iron, and that calcium supplements, when
needed, should preferably be taken when going to bed.


http://ajcn.nutrition.org/content/68/1/3.full.pdf
 

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