I have subscribed to the Dr. Mercola newsletter for many years. He has new video up that you must watch about aspartame/Equal artificial sweetener.
http://www.youtube.com/watch?v=JkS1adbM8Po
It is in 100's of products. He documents how the original research was seriously flawed and actually criminal how it was done. Shockingly approved by an FDA commissioner overrule of the research in 1981.
Average American drinks 1 GALLON of soda a week - stop it - stop it now!!!
Please watch this and the 60 minutes interview.