Recent research on the way the anorexic brain - even after recovery - perceives food is worth checking out. (Abstract is free. Full text available online for a fee.)
The paper, published in the poetically named Neuropsychopharmacology journal, discusses "the first evidence that individuals with AN process taste stimuli differently."
The area of the brain they were spying on? The insula. The same place other interesting research has been poking at, and also here in more readable form.