That’s not really a diet vs regular issue. That being said, I looked into it and found conflicting results. I found some sources that backed what I said while some backed Frink, so who knows. I do know it’s rumored to cause brain tumors and my grandpa had to use the artificial sweetener (aspartame) they used in diet soda for almost anything that called for real sugar (even food) because his diabetes was so bad and he ended up dying of a brain tumor rather than anything diabetes related, but that’s not exactly conclusive.