What's in a Diet Coke?

What's in this tasty beverage? What allows it to drive me into the store several times a day carrying a 44 ounce styrofoam cup for a refill? Aspartame. I heard that labratory rats had some kind of reaction to it. I'm not sure what I heard really, but one thing I remember is that it effects your memory. I can't remember what else. I need a diet coke in the morning and in the evening. I do not know if my bipolar tendencies are coming from my abuse of the desirable beverage or if I was just born a little off. I plan to live a long time and one day soon I'm going to stop drinking diet coke. I will be OK. I know someone out there can relate to me. I'm a person, I'm a human being. I just got hooked. Sorry....I really got distracted....now what was I talking about? I can't remember.