Let's face it. Most people would be sick from eating that much sugar. And you probably are too. That's why you have to get rid of the food in a way you probably think is unique to you. And you're convinced that you're the only one who is haunted by these feelings.
Denial can be very strong.
So you head to the bookstore, or go on-line, seeking information. Feel no control over the amount of food they eat. Base their self-worth on how thin they are. And suddenly your feelings and behavior don't seem so unique. You have a condition with a name.