Meine Liebe, clearly your hunger center has shut down. I have no idea about that stuff, what makes the body hungry, except theres some sort of communication that normally goes on, which in your case is disrupted.
Usually these things have something to do with message centers and hormones that bind to receptors. It could be that whatever receptors of yours involved in this are "burned out"
Have a look at this article about french lily. Especially the part about how it "rejuvenates receptors" . Could be worth investigating to kickstart your hunger.