Loktar
Internet God
I suspect that is true about diet soda drinkers gain more weight.
I think of the classic story of the person who goes to McDonad's and orders a large size meal and a diet soda and somehow think its healthier.
I don't know why people drink the stuff, I don't trust the sweetener they have in them and to me they taste terrible, that's just me though.
I have no delusions that fast food plus a diet soda equals a healthy meal. I used to get odd looks from people because I used to drink a diet soda with a sandwich smothered in mayo.