yes, they cause damage to the kidneys, and when your kidneys are damaged you get a lot of the symptoms associated with type 2 diabetes
i'm not sure exactly which of them but i know that the big trigger for me, caused tinnitis, double vision, cramps, muscle weakness, after drinking Monster with Sucralose and Acesulfame-K (potassium)
i'm fairly sure that a lot of the artificial sweetners are toxic to the kidneys