i have always been amongst the skinniest people i know...i'm 6'1" 150...pretty thin. i have days where i just don't have my appetite, but that's usually when i'm around my family all day and can't smoke...weed has always worked as an appetite stimulant for me. for the most part, i'm one of those skinny dudes that eats as much as my fatass friends, but for some reason i never really gain weight. my patna works at muscle milk, so he's been hooking up the "monster mass" shakes, and i do some half-assed workouts...i gained a few pounds, but im still thin. i dunno homie...like some other dude said, i feel ok cuz i know i eat a lot and still don't weigh anything...u gotta get your nutrients. i'd be interested to hear what the doctor says though...