I had a pdoc that was trying every med under the sun back in the mid 1990's on me for my depression (he had no idea what was the cause of my depression or how bad I was feeling)......he tried prozac & it totally took away my appetite...to the point where I ended up in an eating disorder's treatment center & in & out of the medical hospital having IV nutrition for about the next year after that. He went from the prozac into the Wellbutrin which did exactly the same thing.....but for me, stress had always caused me a loss of appetite way back in my school years. After a few years & having massive migraines that I couldn't function with, my weight went the other direction then another major stress situation in my life hit & so did the anorexia again though it never got as bad as the first time, it was still what the MD's called life threatening & I ended up in the medical hospital again with IV nutrition. It took me years to recover after this last time, but I'm being very careful not to allow my weight to get into the pendulum mode......just sitting at a healthy weight & not going to allow it to do anything other than that. Living alone, I have no one to take care of me if I were to allow my weight to get out of control........so I do believe that we have some level of control over our eating or lack of eating otherwise no one would ever be able to recover.