It happens to me too but it's more immediate for me. Within a few hours. And for me it's gas. I will gain a good 2 inches or so around my abs and be disgusting. Not very lady like. If nothing else when my better half and I are at parties our out it's less tempting to gorge myself knowing that I will not want to embarrass myself by farting in bed all night after. I'm always back to normal after two days of normal eating though.