Lol, Eman, where did you get that information?? It's kind of at odds with a lot of other information. Just the other day on the news it said (sorry I don't have the link) that most Americans get all the FLUID they need without drinking extra water. And why would our sense of thirst be diminished--is evolution at work here, lol?
Breast-fed babies never drink water for months, but are plenty hydrated from breast milk alone. Our bodies need FLUID and it doesn't have to be water. True, caffeine-containing beverages have a bit less because of being direutic, but all in all they still furnish liquid.
Now, if you want to dispute the bone-weakening carbonation in coke, etc., then there's a credible argument.
Silly, silly.
Pat (drinking herbal tea--no caffeine, lol)
Edited to add: People in more primitive countries don't have osteoporosis as much as Americans, etc., in large part because they don't EAT AS MUCH MEAT. They can't afford it and use it more to supplement and flavor their grains and vegetables.
Meat digestion causes an acidic ash in bloodstream because it doesn't metabolize cleanly as does complex carbohydrates. The body then will even leach out calcium out of the bones to neutralize the acid condition of the bloodstream, thus causing more osteoporsis. At least that's a lot of what I've garnered over the years. It's the meat-eating that's a big culprit in Americans (according to Jane Brody and others). Sorry to all the Atkins and South Beach dieters, but calcium supplements are probably in order if the above is correct.