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Every time we crack a hen's egg and throw away the shell, we
discard something like ten grammes of calcium carbonate
(minus the membrane - i've just weighed one). That would
be about four grammes of calcium we lose each time, which
is four times the RDI of calcium.
So, i propose this: take
an egg, wash it, crack it and do what
you will with it. Then, put it in a cup, add nineteen grammes
of citric acid, possibly in the form of lime juice, dissolve the
calcium, filter it and either recrystallise or drink the result.
Video version on YouTube
http://www.youtube....ndex=1&feature=plcp
Demonstration [nineteenthly, Oct 12 2012]
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I've done exactly this, using lemon juice. I didn't bother to filter it, just fished out the membrane. |
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I was also working on a theory that crushed eggshells, mixed with a binder, could be used as a dental filling material. It would create a slightly alkaline, mineral rich environment which may assist with remineralisation. |
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(A few minutes later) I just chewed and swallowed a raw, rinsed eggshell on the grounds that my stomach can produce perfectly good acid all on its own. |
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Your calculation for the amount of calcium in an eggshell may be a little off, as eggshell is not pure calcium carbonate; I think it contains some protein and magnesium salts. If anything, however, that probably makes eggshells an even better supplement. |
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Yes it can but the thing is, as it stands calcium
carbonate is alkaline and so is not too marvellous for
the stomach's oxyntic cells. It'd be like taking
calcium carbonate as a dietary supplement, which
some people do of course, but calcium citrate is
more neutral. Anyway, good. |
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OK, i have now done another video version of this.
I'm probably going to do a lot of video versions. Has
anyone got suggestions about whether it's just going
to be annoying for me to churn my ideas this way by
posting links and how to avoid this? Should i just set
up a playlist and put it on the profile page or what?
Or is it not as annoying as i think it might be? |
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kinda baked since 1700s
I recycle mine, the chickens eat their egg shells. I use
either a microwave or plain old oven to heat them to
make them easier to crush and probably less chance of
feeding them bacteria etc.(which they probably already
have) |
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... so RDI eggshell is about a quarter of one ? |
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Do eggshells contain magnesium also? Calcium
supplements in the absence of corresponding
magnesium supplementation are extremely bad
news. |
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they have quite a lot of water in them. once made into a fine powder and dried they weigh very little indeed. Depending on your diet you may already be getting plenty of calcium, otherwise I recommend eating the joints and marrow of bones. |
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The usual practice with eggs seems to be to throw away the shells, possibly into compost and therefore potentially back into food you eat in the end, and chucking it in with some kind of nutrient-rich acidic juice would seem to be a worthwhile use of the things. I have to say i'm inclined towards eating wood ash from safe sources right now though. |
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having a few times consumed powdered eggshell I do not consider it to be a desirable food. It is possible that it is more palatable in liquified form. Given my consumption of dairy and meat (chicken and chicken bones) is quite adequate I do not worry much about it. Recently it came to my attention that you can overdo on calcium and so, meh. |
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You can overdo it, but this idea was mainly aimed at women concerned about bone density who already had osteopenia when i thought of it, so that's not a problem here. There is also a difference between the absorption of calcium phosphate in bone and teeth, and calcium citrate prepared this way. There would be a risk with overdose as usual, but daily requirements are higher with calcium than for any other inorganic nutrient unless you count water. |
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Even for osteoporosis (is that the same as
osteopenia? I thought osteopenia was the penis
bone?), the ratio of magnesium to calcium intake is
probably more important than calcium intake per se. |
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I think there is magnesium in eggshells. Magnesium is available from other sources anyway. It might be worthwhile looking for a good source of magnesium in an acidic food. Spinach fits the bill but calcium oxalate isn't suitable, unfortunately. |
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Studies with calcium supplements from tablets
have shown adverse effects, whereas studies
where dietary calcium was raised by eating more
dark leafy vegetables showed benefits; one
possible reason is that the vegetables also provide
magnesium, maintaining a good ratio of instake. |
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I know this stuff because of a long correspondence
with a doctor who's interested in human responses
to microgravity. There are lots of little-discussed
adverse effects, and magnesium/calcium
problems play a huge part. Microgravity also
accelerates ageing, which I didn't know before. |
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That makes this particular ex-vegan happy, [MB]. |
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Why? Did you spend a long time in microgravity en
route from Vega? |
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