Only one of my cats has the problem. We have exercise with them all regularly.(mouse, toys, etc.) and a special porch with running boards on the walls which she, of course, can't jump up to play on because of her problem. Yes, I have been to a vet about this, but maybe I should try another. I think the problem might be more than what the vets say like maybe diabetes. Does anyone have a cat with diabetes? Thanks for the tip about the food. She might be stealing one of the other cat's food when I am asleep at night. Have separate food dishes in different rooms too, but when I think she is sleeping she could be sneaking into the other room and stealing her friend's food. She dislikes the diet food. May change if I close the door, but then might have to get a litter box for each room which is do-able. Thanks so much for the tips and welcomes.