And now my boy is peeing blood. I knew I should have just went with my gut and kept him on the vet food. The vet put him on it for a reason, clearly. Obviously, I feel terrible for letting a stupid post make me consider I was making a bad choice feeding my cat his original food. I put him on one of the highest quality cat foods, and it still didn't work out. Poor boy... I should say this is all my own fault, and I only blame myself for letting a random person on the internet make me feel like I wasn't doing good enough for my animals.