Splenda definitely causes hunger and cravings for me. The only time I ever used it by itself was for breakfast and the whole day was a disaster . That was the only change I made that day - and there was no whoosh before or after. I have been hungrier before a whoosh - but not with cravings too. If I use it at all anymore, it's in very minimal amounts - I tend to mix it with Sugar Twin in order to use my box of it up, but never use more than 1/2 teaspoon (if that) at a time.