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Geochemical Risk Factors for Mental Functioning, Based on the Ontario Longitudinal Study of Aging (LSA) II. The Role of pH

Published online by Cambridge University Press:  29 November 2010

W. F. Forbes ,
C. A. McAiney ,
L. M. Hayward  and
N. Agwani
W. F. Forbes
Affiliation:
University of Waterloo
C. A. McAiney
Affiliation:
University of Waterloo
L. M. Hayward
Affiliation:
University of Waterloo
N. Agwani
Affiliation:
University of Waterloo
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Abstract

Previous papers reported on the associations between water quality and a measure of cognitive impairment, based on data of the Ontario Longitudinal Study of Aging (LSA). The present report summarizes the information on fluoride (F) and aluminum (Al) and provides additional information on the effects of pH. Specifically, our preliminary results suggest that a neutral pH, relatively low Al and relatively high F concentrations in drinking water decrease the odds of showing indications of cognitive impairment by a factor of about five, compared with other types of drinking water. The relevant chemical reaction is ascribed to an equilibrium involving Al complexes.

Résumé

Selon les données de l'étude longitudinale sur le vieillissement de l'Ontario (Ontario Longitudinal Study of Aging), des études antérieures ont révélé des liens entre la qualité de l'eau et un degré de déficit cognitif. La présente étude résume les renseignements relatifs au fluorure (F) et à l'aluminium (Al), et fournit des renseignements additionnels sur les effets du coefficient d'acidité (pH). En particulier, les résultats préliminaires ont révélé qu'un coefficient d'acidité neutre, c'est-à-dire comptant une petite quantité d'aluminium et une concentration importante de fluorure dans l'eau potable, diminue par un facteur d'environ cinq la possibilité de relever les indices d'un déficit cognitif comparativement à d'autres types d'eau potable. La réaction chimique pertinente est attribuée à un équilibre où interviennent des complexes d'aluminium.

Keywords

Cognitive ImpairmentAluminumFluoridepH.Détérioration cognitivealuminiumfluorurepH.
Type
Articles
Information
Canadian Journal on Aging / La Revue canadienne du vieillissement , Volume 13 , Issue 2 , Été/Summer 1994 , pp. 249 - 267
Copyright
Copyright © Canadian Association on Gerontology 1994

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