yankdownunder, I am an avid soda drinker. I used to drink regular coke on a very regular basis, probably more than I should have. As soon as I switched to Diet Coke, I lost almost 5 pounds in the first couple of weeks and another 3 the next couple of weeks after that. This was accomplished simply by changing to diet sodas only.
I am not saying this is healthy or better than water, I’m simply speaking up as you asked if anyone had lost weight drinking diet sodas, and I have.