Re: Al's diet - distilled water

[Guest guest]

[Tony said]: if your bones are de-mineralizing you should not drink

anything with distilled water. Distilled water has no mineral content

and can actually dissolve some of the minerals in your body and carry

them away.

Logan asked:

>>>

From: " loganruns73 " <loganruns73@y...>

Date: Sun Dec 19, 2004 5:27 am

Do you have any scientific evidence for these claims about distilled

water? There is lots of marketing hype, both pro and con, but I've

never seen any hard proof one way or the other.

>>>

Actually, this is a well-established topic of physical chemistry. It

turns out that all minerals dissolve in water. Physical chemistry

deals with the point at which a solid is at equilibrium with its

dissolved ions. A constant Ksp (solubility constant) is defined as

the product of the concentration of the ions raised to a power

corresponding to their stoichiometric quantities. Here are a couple

of links that explain it:

Ksp and Ion Concentration

http://tinyurl.com/6e4sa

http://www.cartage.org.lb/en/themes/Sciences/Chemi

stry/Miscellenous/Helpfile/PrecipitationEquilibriu

m/KspIonConcentration.htm

" The solubility product constant can be used to compute the

equilibrium concentration of ions in solution "

This link explains how solubility constants are derived.

http://www.cartage.org.lb/en/themes/Sciences/Chemi

stry/Miscellenous/Helpfile/PrecipitationEquilibrium/Ksp.htm

http://tinyurl.com/549ko

The second link deals with the solubility of calcium phospate which is

of interest to us because it is a component of bone and tooth enamel

as the mineral apatite. It is obvious that if you have pure water and

calcium phosphate, enough mineral will dissolve to try to achieve

equilibrium. This effect can be aggravated by acids present in the

body which increase the solubility of the minerals by reacting

chemically and shifting the point of equilibrium. This is explored in

more detail under many topics of dentistry, osteoporosis, ceramic

implants, etc. See the references below.

Tony

===

http://iadr.confex.com/iadr/2004Hawaii/techprogram/abstract_40609.htm

0880 Low-Crystallinity Carbonated Apatite Solubility Behavior; pH and

Solution Strontium Effects

D.D. HESLOP1, Y. BI1, A.A. BAIG2, and W.I. HIGUCHI1, 1 University of

Utah, Salt Lake City, USA, 2 The Procter and Gamble Company, Mason,

OH, USA

Caries Res. 1973;7(4):297-314. Related Articles, Links

Fluoride incorporation and apatite solubility.

Driessens FC.

PMID: 4518085

Lin FH, Liao CJ, Chen KS, Su JS, Lin CP. Related Articles, Links

Abstract Petal-like apatite formed on the surface of tricalcium

phosphate ceramic after soaking in distilled water.

Biomaterials. 2001 Nov;22(22):2981-92.

PMID: 11575472 [PubMed - indexed for MEDLINE]

2: Suzuki T, Yamamoto T, Toriyama M, Nishizawa K, Yokogawa Y, Mucalo

MR, Kawamoto Y, Nagata F, Kameyama T. Related Articles, Links

Abstract Surface instability of calcium phosphate ceramics in tissue

culture medium and the effect on adhesion and growth of

anchorage-dependent animal cells.

J Biomed Mater Res. 1997 Mar 15;34(4):507-17.

PMID: 9054534 [PubMed - indexed for MEDLINE]

3: Larsen MJ, Pearce EI, Ravnholt G. Related Articles, Links

Abstract The effectiveness of bone char in the defluoridation of

water in relation to its crystallinity, carbon content and dissolution

pattern.

Arch Oral Biol. 1994 Sep;39(9):807-16.

PMID: 7802616 [PubMed - indexed for MEDLINE]