[darksyndrem]

Well, if you're active, about 2000 calories a day is normal (according to American common sense), so I would guess that if you're not active at all 1000 isn't really a disorder. If you're feeling fat at 87 lbs, it could turn into an eating disorder. Just keep in mind that if you want to not be fat, and be healthy/fit, be active and gradually eat better (more food, but keep making sure it's good food). With that, you should be fine imo.

If you can't see your ribs, you're probably fine. You should post an appropriate picture to try and show how small you are, 87lb at your size might be a lot healthier than it sounds.