Im not bulimic, no aneroxic , my body just cant gain weight. I am 23, male, 5 ' 10'' and currently weigh 114... down 10 pounds from about 1-2 months ago. I eat decently. The main problem is anything that enters my stomach, it doesnt seem to like it... Like its hypersensitive to any food. bad stomach cramps, nausea, loose bowels...sometimes when i go to the bathroom, half the food isnt digested yet..