Talk:Calcium metabolism

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Molecular Biology: MCB

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Biological functions of calcium

please include it's role in apoptosis — Preceding unsigned comment added by 141.237.110.144 (talk) 14:51, 7 September 2012 (UTC)[reply]

Sources of calcium

Could someone correct this? 25 in and 10+5 out doesn't give a net 5 in, so one of the numbers has to be wrong. —The preceding unsigned comment was added by Cnyh (talk • contribs) 10:17, 27 March 2007 (UTC).[reply]

Absorption

Agree with post by Cnyh. Numbers don't add up. Found a new source that states "The percentage of calcium absorbed depends on the total amount of elemental calcium consumed at one time; as the amount increases, the percentage absorption decreases. Absorption is highest in doses ≤ 500 mg. So, for example, one who takes 1,000 mg/day of calcium from supplements might split the dose and take 500 mg at two separate times during the day."^[1] — Preceding unsigned comment added by 137.100.97.30 (talk) 12:49, 7 June 2012 (UTC)[reply]

References

^ http://ods.od.nih.gov/factsheets/Calcium-HealthProfessional/

How does aging disrupt calcium metabolism?

EIN (talk) 14:04, 29 October 2012 (UTC)[reply]

Calcium homeostasis in aging neurons, Calcium metabolism and vitamin D in the extreme longevity --IONTRANSP (talk) 18:32, 6 November 2012 (UTC)[reply]

Positive and negative interactions with other chemicals

I have revised the section on the regulation of calcium metabolism, and added a new diagram which is clearer than the one that was there before (I hope). The revised text does not say anything that deviates radically from what was there before but is less telegraphic in style, and makes sure that all the logical steps are covered.

The preceding sections on the positive and negative interactions of calcium with other chemical make no sense. "Positive" and "negative" from what point of view? Just looking at the lists I think that these are meant to be substances that influence the availability of calcium for absorption from the gut, but some of the items listed make no sense. For instance sodium (a positive ion) cannot "bind" calcium (also a positive ion). I am very tempted to completely remove those two sections, leaving maybe only the list of foodstuffs that bind calcium and make it unavaibale for absorption (e.g. phytates etc.)Cruithne9 (talk) 12:57, 23 May 2015 (UTC)[reply]

[1] ttp://ods.od.nih.gov/factsheets/Calcium-HealthProfessional/

[1]