Hello, my vet has recommended that I put my dog on Hills K-D food due to some elevated kidney levels. I have done my research, and I am leaning towards not putting him on it. It seems to be an awful expensive food, which is low in protein, and high in fat. The dog is still fairly young (5 years), and very very active. I would like to put him on a lower protein food, but I am having some trouble finding something that would be similar in nature, but a non prescription food. I feed Diamond Naturals now, and I am leaning towards maybe Diamond Lite, which is slightly lower in protein than the regular diamond, and slightly higher than the Hills K-D. It also has a lot less fat than the Hills K-D. Just curious if any of you guys have had to go through something like this with any of your dogs, and what route you chose to take. Any info is appreciated. Thanks.