My mum drinks soda water by the litre.  When I say soda water, I mean  
just carbonated water with sodium bicarbonate, not the american sense  
of "soda".  Is the acidic nature of soda water dangerous to your bones  
(we have osteoporosis in our family, and by some funny coincidence, a  
milk intolerance that manifests as dairy product addiction).

All wikipedia has to offer is the usual 6u77$#!+ pseudo-science...
"Intake of carbonated beverages has been associated with increased  
bone fracture risk in observational studies, but the net effect of  
carbonated beverage constituents on calcium economy of the body is  
negligible. Thus, the skeletal effects of carbonated beverage  
consumption are likely due primarily to milk displacement (drinking  
club soda and thus drinking less milk)."

But it does not separate plain carbonated water from phosphorus- 
containing fizzy pop.

Ashley