What Causes Loss Of Appetite With History Of Diverticulitis?

I have high hemoglobin and last year I had Diverticulitis and had 12 in, if my colon removed. I have had blood work and a Scan and blood is normal and no signs of colon problems, but I have no appetite. What could be causing this? PS I had my front teeth pulled and now have a partial plate. I do not enjoy food as much since this due to the plate.