Bingo! We have a winner.
I have a cat with CRF, my Rocket, and he’s allergic to grains. I feed him nothing but Fancy Feast Classic canned food, and he has gained weight, much to our and the vet’s delight, and the progression of the disease has halted.
Fancy Feast Classics are the ones with no soy (a disaster for cats) and no grains. There are only six flavors I can give him because he’s also allergic to the questionable substance that they call “fish” in the cat foods, but he’s doing really well.
The advice to feed sick cats “science diet” and “prescription diet” that are full of soy and grains is exactly the wrong thing to do for them. It might work for omnivores like dogs, but not for obligate carnivores.
And personally, being Type II myself, I know that grains are the enemy. My FBS is in the 80’s and low 90’s because I don’t eat carbs.
Of course, all this proper eating ensures that we don’t spend a lot of money on drugs to treat our food-caused metabolic mess ups.
Vets that sell that crap ought to be ashamed of themselves...the money's good, though...
I thought I was doing a good thing by feeding my kitty Science Diet Dry on the advice of my vet (at that time). He was my first Diabetic. I swear, Science Diet foods are the worst!