People who say those things don't understand. Bulimia doesn't necessarily cause weight loss. The constant acidic irritation of the throat really puts people at risk for esophageal cancer though.

But it sounds like you know it's a problem though, which is what really matters. By knowing, you can search out people who can help and take steps to help yourself. Keep at it. Ignore the ignorant. Screw 'em, 'cause they're not helping.