karendee, seems like there's something to it. From a study extract:
"after drinking for 1 week 2 liters per day, between meals, of tap water and at the end of 1 week of the same amount of bottled hard (Ca2+ 255 mg/l) or soft (Ca2+ 22 mg/l, Fiuggi water) water, in a double-blind randomized, crossover fashion. As compared with both tap and soft water, hard water was associated with a significant 50% increase of the urinary calcium concentration in the absence of changes of oxalate excretion; the calcium-citrate index revealed a significant threefold increase during ingestion of hard water "
full abstract at
http://content.karger.com/ProdukteDB/produkte.asp?Aktion=ShowFulltext&ProduktNr=223854&Ausgabe=226754&ArtikelNr=46301 or search for hard water causes kidney stones, it's the 4th one down in Google.
James C.
Co-Moderator Prostate Cancer Forum