I do believe they cause weight gain however, not in what they do, but the signal to the brain that you are eating sweet things. Sadly our brain is complex, but stupid, and will want MORE of the sweet we just drank or eat.

Of course we’re not going to eat just aspartame and will eventually eat a cookie or the like. Isn’t it interesting too that the majority of this product is use in drinks, and not foods? Hmmm wonder why?

Splenda is bad too, but at least tastes like sugar.

They are George. A. Burdock, the Burdock Group; John Doull, University of Kansas Medical School; Robert M. Kroes, Institute for Risk Assessment Sciences, Utrecht, The Netherlands; Bernadene Magnuson, University of Maryland; Gary M Marsh, University of Pittsburgh; Michael W. Pariza, University of Wisconsin; Peter S. Spencer, Oregon Health and Science University; William J. Waddell, University of Louisville Medical School; Ronald Walker, University of Surrey, Great Britain; and Gary M.Williams, New York Medical School.

I wouldn’t knowingly use aspartame. I’d rather use natural ingredients to the extent I can. But then I’ve never liked the taste of diet colas.

You may want to click the link in Joe’s comment. That will give you an opposing viewpoint.

As always, if you have a medical question, you can ask your doctor. But if you use a lot of products with aspartame, you may want to do some more research yourself.