The thing to think about that when you see fat you are looking at someone who is starving. They are literally starving for nutrition. This is why it is important to supplement correctly with the vitamins and minerals that a person needs on a daily basis.
People need 90+ nutrients in their diets. Plants need only 9 normally and get by on 3 plus the Sun. So as yourself where are the other essential nutrients supposed to come from?
And if you are working out or an athlete you must supplement your diet other wise you will begin to breakdown.