I understand, intevetionn. I still read thinspiration LJ communities once in a blue moon even though I gave up the idea of trying to starve myself loooong ago. It's like weighing yourself - very hard to give up.
im not an expert... but i have had a lot of trouble with binging. a little while ago i upped the dosage of my antidepressant and that compulsion to eat til i feel punished has almost completely gone away. i have never not thought about food or eating this much. i actually don't even think that for my entire life i have ever only eaten when i am actually hungry to the point where i am actually full ever. but for the last few weeks thats how its been. its actually a little weird.
so i guess for me, i think the depression came first.