I just started on Celexa - was on 10mg the past month and I was in the same boat. No appetite and having to force myself to eat. I can't even eat ice cream anymore

as it makes me feel yucky... Upped the dosage to 20mg today. Going to see how things go from here - if the non-appetite continues after a couple more weeks, I'll get the Dr. to try something else (although everyone else in the family seems to have had great results from the Celexa).
The plus side is that going from 5mg to 10mg has gotten me down to the 1 panic attack every other day or so, so hopefully the 20mg will almost eliminate them (or perhaps 30-40mg)....