I give in. I've never seen an addiction this strong, if addiction is what it is. Do you ever lose your love of ice cream, even if you aren't allowed to have it? or your favorite dish you grew up with, the smell coming from the oven with your mother in the kitchen. Xuxu loves Iams. That's all there is to it. I've just sat here and seem him indifferent to the canned food. He's lost more weight. I've had to syringe feed him for the last 2 days. He was sitting quietly in the position I put him in to do his ear prick. But one jostle of the Iams kibble against the bowl and he's wide awake. So I give him the bowl of Iams and he dives in. I can still hardly believe it, but in less than 5 min, with a terribly sore throat, he's demolished nearly half a cup of the stuff. He's over drinking water now, something else I haven't seem him do in 2 days. So his will is stronger than mine, and I thought I could be stubborn. I yield to the master. Since the specialist said he won't get better from this yoyoing, and we still don't have a clue what a primary disease would be, I think I'll just try to make him happy. If Iams makes him happy, so be it. The bright side is he'll need more insulin and I can stop squinting and taking 10 min trying to adjust the stuff to such a minuscule amount in the syringe. I'll still put out the canned food. He does like the mixed grill Friskies. It will also help the other cat in the room who has diarrhea on canned food.