I am bulimic, I am Bipolar, and I have ADHD.. Is there a link between eating disorders and Bipolar or ADHD?

Also– Does bulimia ever get worse during different episodes ie; mania, depression, mixed, etc.?
I feel like depending on my emotions my bulimia can either be close to non-existent and I can go almost days with little eating, but other times I will be binging and purging up to 4-6 times a day!

I would talk to a shrink about this sort of thing.