bulimia
This usually happens because they have been restricting themselves of the so called bingefood that taking it all in disproportionate amount is like a sign of rebellion But once their bingeing has sinked in, they make their way to the wash room and forcibly purge it all out of their throats. The last major type is Binge-eating Disorder. This is similar to bulimia nervosa in the sense that there is a process of consuming large amounts of high caloric and fatty foods. But the difference with bingeeating disorder is that they do not throw it up. Their bingeing happens secretly, coupled with feelings of shame and self contempt.