Actually, they do. despite my admonitions, the wife still drinks diet pop (mostly Diet Dr. Pepper), and according to the list of ingredients, it contains aspartame. I'm pretty sure all the other major diet sodas do as well. EDIT: A cursory look shows Diet Dr. Pepper, Diet Pepsi, the majority of Diet Coke and Diet Dew all still contain aspartame. Your right, my apologies. Either way, it's still extremely debatable if it is indeed harmful. I'm sure some studies say it's not harmful, while others do, but a quick scan of Wikipedia found this: (I assumed the NCI would have no hidden agenda) And while they may not help you lose weight, you certainly aren't gaining weight such as with regular soft drinks. I guess basically what I am getting at is that it may or may not be harmful, but nowadays what isn't? Some people believe that their could be a link between cancer and cell phone antennas. Hell, who knows, it's probably bad to use the "crisping sleeve" to cook my hot pocket for lunch too.