Rm, that is a great questions, to which I have no answer. But, it reminds me of something I recently noticed. Since I drastically cut my carbs(I would have up to 15 servings a day, (no I am not joking, yes I realize some of you just gasped in horror) I have noticed I fart a lot less, a whole lot less, so much so when I farted yesterday, I was like wow, it's been a couple of days. So, I don't know if this is a good thing or not, I think I have lost about 4 lbs, but I am going to be weighed today, so I will soon know if I have actually lost weight or if it's just my scale being goofy.