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Neutral water should have very little effect on the carbonates in the teeth.
You don't need 7 to 8 glasses a day. You need whatever you feel like drinking. Our bodies have evolved very good internal signalling over these millions of years. If you need water, you'll feel thirsty.
Incidentally, the 6 to 8 "glasses" of water includes that in other food and drink.
Oh good! I was beginning to think I might have to drink 6 to 8 glasses of water as well as 6 to 8 glasses of beer, and I couldn't work out how I was ever going to get any sleep.
Most of our homoeostatic mechanisms and feedback procedures were evolved under very different environmental conditions and might lead us astray now.
Actually, many of us in the UK live in hard water areas
OK, so one, irrelevant, part of the multitude of feedback systems goes wrong in some people and you think that's grounds to discredit all the bits that do work?
Carbonated, and with other acids. Sugar-rich. If the fluorides are very high you will get discolourisation and pitting.
Carbonation in water/drinks isn't very quick at eroding teeth, but it does do it, but sugar and phosphoric acid and citric acid and so forth are much more effective at attacking your pearly whites.see:http://www.ehow.com/about_5365577_harmful-effects-carbonated-water.htmlSo, yeah, coke, even diet coke.