My dietician told me to drink juice or tea, too, but I think it's because I hate water. =-) Even bottled water, I can drink about one glass and then I don't feel like drinking anything else for the rest of the day. With juice, I don't have that problem, I think it's because of the taste, or something. Usually, though, I just drink milk, for the calories, but i've been working on drinking more juice, for hydration reasons, and because milk's gotten so expensive lately. (I used to drink a gallon a day, no way am I gonna afford to do that now! =-)
Sombody mentioned splenda. I've heard lots of bad stuff about it, too. Some doctors reccomend it, some doctors don't. =-) There is another substitute called stevia. It can't be grown in the US, so it's really expensive here, and it'll taste extremely nasty if you don't know how to use it right (i know from experience =-) Anyway, i understnd it's healthier than sugar, but I don't know about any medical evidence to back it up. (The plant was used as the origional sweetner, back before there was sugar... or somewhere where sugar didn't exist, one of the two =-)