All the ladies in my old WW group learned the hard way to NEVER, EVER eat more than one FiberOne bar in a day! Oh, it will not be pretty if you do. They used to make me very bloated, because I was eating them when I wasn't used to fiber. I think primarily the bloat comes from all the fiber in them....but now that I have gotten used to eating a lot more fiber, I can eat one FiberOne bar each day for a snack without feeling bloated or gassy.
But, seriously....eating more than one in a day can be risky!