Eggshell Calcium Composition

Tarmander

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Apr 30, 2015
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3,579
Mineral, amino acid, and hormonal composition of chicken eggshell powder and the evaluation of its use in human nutrition. - PubMed - NCBI

Not sure if this was posted here as I'm on mobile. This gives some of the good reasons to get calcium from eggshells, instead of oysters or other sources.

"Chicken eggshell powder (ESP) might be an attractive source of Ca for human nutrition. To study its nutritional value, we analyzed minerals, amino acids, and hormones in commercially available Slovakian ESP. The mineral composition was compared with three Dutch ESP samples that differed in feed and housing, a Japanese ESP, refined CaCO3, and an oyster shell supplement. Chicken eggshell powder contains high levels of Ca (mean +/- SD/g EPS: 401+/-7.2 mg) and Sr (372+/-161 microg) when compared with recommended or estimated daily intakes for humans 51 to 70 yr of age. Levels of potentially toxic Pb, Al, Cd, and Hg were very low as were levels of V, B, Fe, Zn, P, Mg, N, F, Se, Cu, and Cr. Large differences in the levels of F, Se, Cu, Cr, and Sr in the Dutch and Slovakian ESP indicated a strong influence of feed and environment. The small protein fraction of ESP contains high levels of Gly and Arg. Furthermore, small amounts of transforming growth factor-beta1 (0.75 to 7.28 ng/g ESP), calcitonin (10 to 25 ng/g ESP), and progesterone (0.30 to 0.33 ng/g ESP) were detected. Estradiol-17beta and calcitriol were below the detection limit of the methods used. Compared with ESP, refined CaCO3 was found to contain increased levels of Cd, and the oyster shell supplement showed increased levels of Al and Cd. Therefore, ESP seems to have a beneficial composition with about 39% of elemental Ca, relevant amounts of Sr, and low levels of Al, Pb, Cd and Hg. It may be used as a Ca source in human nutrition."
 

zooma

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Dec 8, 2014
Messages
132
This is the study that @Dan Wich has on toxinless. I think you are right with the conclusion; it is worth seeking out eggshell calcium over alternatives, and also it doesn't matter too much what the source of eggshell is, its all pretty good.

Now, if we could find somewhere to buy it!
 

cdg

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Dec 3, 2015
Messages
180
Mineral, amino acid, and hormonal composition of chicken eggshell powder and the evaluation of its use in human nutrition. - PubMed - NCBI

Not sure if this was posted here as I'm on mobile. This gives some of the good reasons to get calcium from eggshells, instead of oysters or other sources.

"Chicken eggshell powder (ESP) might be an attractive source of Ca for human nutrition. To study its nutritional value, we analyzed minerals, amino acids, and hormones in commercially available Slovakian ESP. The mineral composition was compared with three Dutch ESP samples that differed in feed and housing, a Japanese ESP, refined CaCO3, and an oyster shell supplement. Chicken eggshell powder contains high levels of Ca (mean +/- SD/g EPS: 401+/-7.2 mg) and Sr (372+/-161 microg) when compared with recommended or estimated daily intakes for humans 51 to 70 yr of age. Levels of potentially toxic Pb, Al, Cd, and Hg were very low as were levels of V, B, Fe, Zn, P, Mg, N, F, Se, Cu, and Cr. Large differences in the levels of F, Se, Cu, Cr, and Sr in the Dutch and Slovakian ESP indicated a strong influence of feed and environment. The small protein fraction of ESP contains high levels of Gly and Arg. Furthermore, small amounts of transforming growth factor-beta1 (0.75 to 7.28 ng/g ESP), calcitonin (10 to 25 ng/g ESP), and progesterone (0.30 to 0.33 ng/g ESP) were detected. Estradiol-17beta and calcitriol were below the detection limit of the methods used. Compared with ESP, refined CaCO3 was found to contain increased levels of Cd, and the oyster shell supplement showed increased levels of Al and Cd. Therefore, ESP seems to have a beneficial composition with about 39% of elemental Ca, relevant amounts of Sr, and low levels of Al, Pb, Cd and Hg. It may be used as a Ca source in human nutrition."

Yes indeed:
Abstract
Aim: Taken into consideration that the deficiency of calcium (Ca) in the diet is a common
problem, the aim of this work was to study the chicken eggshell as Ca source at home. It was
evaluated: (1) different mechanisms to process eggshells and find an easy way to determine the
required amount of Ca at home and; (2) the flavor and the texture for eggshell fortified food.
Methods: Chemical and mechanical methods of eggshell processing were evaluated. Changes
in flavor and texture were evaluated in volunteers coordinated by a professional chef.
Results: A single eggshell contains 2.070.18 g of Ca; therefore half an eggshell could provide
the amount of Ca needed by adult human beings per day. The best way to use chicken eggshell
as Ca dietary supplement is powdered to add to bread, pizza or spaghetti as there were
small changes in texture and no changes in flavor.

See also: EGGSHELL CALCIUM IN THE PREVENTION AND TREATMENT OF OSTEOPOROSIS attached it a very poor scan so could not post an abstract.
 

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martha.ellen

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Joined
Oct 18, 2013
Messages
1
If a good supplement is difficult to find...... it is very easy to make your own egg shell calcium & it takes very little time. Save a few shells. Wash them & let dry. Crush them & then put crushed shells in an inexpensive coffee bean grinder. Blends up well in shakes.
 

Ukall

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Joined
May 21, 2016
Messages
205
Has anyone heard about Lithothamnium Calcareum in form of supplement? Is it better or worse than Eggshell Calcium?

I only found this regarding it:
http://www.algae-facts.com/Lithotha...in=&license=&contact=&country=&short_license=

The bioavailability of lithothamnium makes the alga an excellent alternative to previous sources of calcium. Thirty-four per cent of lithothamnium is organic, natural calcium, of which 96 per cent is available for the body use at a pH of 1.5 in the stomach. By comparison, oyster shell, traditionally seen as the highest quality natural source of calcium, is dissolved in the stomach at a rate of only 67 per cent, so that its bioavailability is considerably lower.

The natural and hence highly bioavailable elements of the lithothamnium alga are absorbed by the body in a continuous and harmonious manner, the more so as it is now common knowledge that dietary minerals can be optimally absorbed by the body when combined with amino acids.

Gastroprotective and toxicological evaluation of the Lithothamnion calcareum algae
 
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