6 year old boy with bulimia?

I had a 10 month old foster child who WOULD NOT STOP eating...he did not seem to be deprived of food when he arrived because he weighed just 1 pound less than my 2 year old son...but, this baby would eat and eat and eat. At first, I kept giving him food, thinking that he would stop when he was full. But, he never stopped! Like CaddoRose said, lots of kids come with food issues. I was suprised, though, that they started so young!