I don't have experience with abilify myself, my mate started it 4 years ago and is still pretty damn underweight. He said he's up 5 lbs since then but still.. I was on olanzapine+fluoxetine for a while and didn't experience this hunger, just a lot of blunted detachment from every day life. Maybe this is why for me
"If you have a type of depression where you are self-medicating with carbohydrates, the SSRI may help to blunt that effect. Weight loss occurs."