My third kid sent my appetite bonkers.  I could eat 400lb people under the table and still be hungry.  I think my appetite is permanently wonked now because a tiny part of me wishes I just didn't care and "could" go crazy.  All the weight's gone, but I still have to be a LOT more mindful than I used to.  I don't get full anymore.  Ever, really, except this brief "I can't handle this" with some pure veg--I think it's the fiber proportions, dunno.  I used to get full all the time.