One of the reasons aspartame is said to cause weight gain is by making people feel as though they saved the calories on diet soda so they can eat more food than if they didn't.
Another reason is aspartame is said to cause depression which leads to eating more.
A source also said that formaldehyde in the aspartame stores in fat cells in the hips and thighs, and may cause problems with blood glucose control.
Whatever the case may be I would consider diet soda or just soda to be something to be enjoyed in moderation, just as all sweets and foods.
I heard a lot of disturbing facts in the video and in my sources, but found if it is unsafe it is for all people, not just diabetics. I do not think this is a topic I will quit looking into just because the assignment is over. My husband lives off of diet sodas at work, so I really would like to know more.
My argument will be based on artificial sweeteners, do the pros outweigh the cons.
References
Farley. A, "Symptoms of Aspartame Poisoning."LIVESTRONG.com. Demand Media. Web.16 August 2013.
"Aspartame." American Cancer Society. American Cancer Society. Web. 28 May 2014.
Humphries, P, Pretorius, E., Naude, H.Direct and “Indirect Cellular Effects of Aspartame On the Brain” European Journal of Clinical Nutrition. Nature Publishing Group.2008. Library
Database.