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R.B. · 11-15-2013, 04:29 PM

Back to the issue of calcium; and if calcium inhibits fluoride absorption it must follow that fluoride inhibits calcium absorption . . .

In nature calcium fluoride is apparently a common source of fluorides, and it is likely the association of the two that prevents absorption http://en.wikipedia.org/wiki/Calcium_fluoride

Metabolism. 1978 Aug;27(8):971-4.
Effect of concurrent calcium ingestion on intestinal absorption of fluoride.
Jowsey J, Riggs BL.
Abstract

It has been suggested that calcium interferes with absorption of fluoride and that it diminishes the effect this ion has of increasing the bone mass when taken orally. Normal volunteers were given a combination of fluoride and calcium carbonate or fluoride alone, and serum levels of fluoride were measured to determine the effect, if any, of the concomitant administration of calcium on absorption of fluoride.The results indicate that 1.3 g of calcium, as the carbonate, decreases the integrated blood fluoride values by 22%.

11-15-2013, 04:29 PM	#75
R.B. Senior Member Join Date: Mar 2006 Posts: 1,843	Re: Iodine deficiency ! - falling intakes - goitregens - competition bromine and fluo Back to the issue of calcium; and if calcium inhibits fluoride absorption it must follow that fluoride inhibits calcium absorption . . . In nature calcium fluoride is apparently a common source of fluorides, and it is likely the association of the two that prevents absorption http://en.wikipedia.org/wiki/Calcium_fluoride Metabolism. 1978 Aug;27(8):971-4. Effect of concurrent calcium ingestion on intestinal absorption of fluoride. Jowsey J, Riggs BL. Abstract It has been suggested that calcium interferes with absorption of fluoride and that it diminishes the effect this ion has of increasing the bone mass when taken orally. Normal volunteers were given a combination of fluoride and calcium carbonate or fluoride alone, and serum levels of fluoride were measured to determine the effect, if any, of the concomitant administration of calcium on absorption of fluoride.The results indicate that 1.3 g of calcium, as the carbonate, decreases the integrated blood fluoride values by 22%. Last edited by R.B.; 11-15-2013 at 04:47 PM..