Junebug -
When I discussed these feeleings with my T, her response was that I've been so depressed for so long that no only did I not enjoy things I used to (martial arts, weightlifting, etc.) but I was also losing interest in the essential things in life. The depression had already robbed me of my hobbies, which brought me joy, and once those were gone the only things left for the depression to affect were life's essentials like eating, bathing, etc.
As a result I lost 35 lbs in about 4 months, and over the last 2-3 weeks have been on an almost exlcusive diet of soup and pedialyte. I was bruising when I shouldn't because of my iron deficiency, cramped from being dehydrated, and my kidneys ached along with the rest of my body. My doctor added an extra AD called Remeron, which has helped me with my sleep and to some extent with my appetite. I am back to eating solid foods in small amounts and am still drinking the pedialyte but rotate it with gatorade (which has less electrolytes) and water. Taking vitamins is also advised as your body is most likely not getting the essential nutrients. I would guess that yours is also closely linked with your depression; perhaps you should speak with your doctor (if you have not already.)