He doesn't need food any damage caused to his body from lack of food/starvation is taken care of by his healing factor. Although banner could starve to death, its just that before he does he would black out from lack of caloric energy and turn him into the hulk

He doesn't need food. Any damage caused to his body from lack of food/starvation is taken care of by his healing factor. Although Banner could starve to death, just before he does he would black out from lack of caloric energy and turn into the Hulk.