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[Gene GeRue <genegerue AT ruralize.com>]

> The World Health Organization cites several large-scale studies that
> show an inverse correlation between water hardness and cardiovascular
> disease.  One should remember, however, that correlation is not the
> same thing as causation.

I think it is the particular mineral that makes it good or bad. Is it 
selenium that has made certain areas famous for lower incidence of 
heart disease?