If I were to take you literally, it would mean you are obsessive about food but what I think you are really asking is "Why am I so hungry." From examining your profile, I believe you are very young person. Young people are in the process of growing and they are blessed with enormous amounts of energy. This requires fuel in the form of food and lots of it. You're best interests are served by consuming the best, most healthful food you can manage for optimal growth and to sustain your energy level. Please use some of your energy for physical conditioning so your food input and energy expenditure is balanced and your muscles become toned and firm.