Hi,
The connection between health problems in humans and artificial sweeteners has so many pro and anti groups that it's hard to know what is really true. And there are big vested interests.
However, I think it would be true that its healthier not to put anything artificial into our bodies. So congrats on breakking your diet coke habit (it is expensive for no good food value)... Spend the money on something you'll really enjoy. See if it makes any difference. I would think some people may be really sensitive to the artificail sweeteners and it could possidbly help, others maybe notice no difference.
Sally
I don't know if this helps. I myself don't drink diet anything, but my aunt who also has ms drinks diet Dr Pepper like it is going out of style. I don't think that it causes her any problems.
Wish I could do more.
Angel