I have been following Nutrisystem for a while and have discovered a few things about myself. Aspartame may be an alternative for sugar, but it has a downside. I can guarantee that one hour after consuming a food containing aspartame I will be hungry again. Not regular hungry, but starving hungry...feed me right now hungry. Therefore, I am trying to enjoy my food without any sweetener. It's tough. Some days I would rather be fat.