Anonymous asked: But if someone is not eating they will lose weight ....
Yes, technically the person is losing weight. But what they are losing is mainly water weight and muscle. The fat is still there, and it will remain there. And when the person begins to eat a little more, their metabolism will have learned to hold on to any food consumed, so said person will gain weight a whole lot quicker even from just eating small things.
Moral of the story: starving is NOT an easy way out nor does it cause you to lose more weight than regular exercise and diet.