As a recovering bulimic, I will beat the shit out of anyone using that excuse. I have no sympathy to anyone who fakes an ED. It destroys much of your life and hurts people around you so badly and seriously, often irrevocably, damages your body.    If I suspect someone is faking it, I'll immediately start quizing them on their symptoms, and I don't care if it's "triggering," because it's obvious they have no clue what they're talking about. ED sufferers are often type A personalities, and when they finally admit to having an ED, they're prone to researching the shit out of it for education, perfectionism, morbid curiosity, etc. They know what they're talking about.