I have drank coke for 20 years and diet coke for another 20 years and when I switched from regular to Diet I lost 40 lbs. I didn't do it for weight control I did it because I used to drink 24 cans everyday. Too much sugar. I drink close to a 12pack a day of diet and the only adverse affects is I don't like any other brand of cola. If I ever have to limit my fluids I will be in big trouble but for now I am going to enjoy it, and cross that bridge when and if I get to it.