I am sorry to hear this. I know I am crashing this party and I hope you don't mind. I have heard this too. What I have heard is that the artificial sweetners are very inflammatory to the body. This is something we MSers try to avoid. I do drink a diet coke now and again (once a month maybe?). I have switched to water but to makes things sweeter I drink sweet tea. I sweeten it with one of the natural sweeteners...I like stevia based sweeteners. The newest one is called truvia. I think this one is showing up in grocery stores. It has low or zero glycemic index so not a big blood sugar issue. Also sweetening with honey is a good choice.....it has less of a blood sugar reaction and it loaded with antioxidants. It has taken me a while to adjust but it is happening. I am happily drinking lots of tea. My tea of choice is anything decaff, but I particularly like rooibos.
Good luck!! I do think I feel better when NOT driking diet cokes......this could be the placebo effect but I believe in that too!! I just re-read my post.............this sounds like a commercial for stevia products! LOL