i had a bypass in april 2012 and following the initial period of healing i began to feel hunger, physical hunger not head hunger. i still do, i feel hungry at apropriate times (when ive not eated for 4-5hours)
this is another case of "we are all different" - you may or may not lose your hunger from a bypass, its not a hard and fast rule. my surgeon certainly didnt tell me that i would, nor my dietician.