The marketing by Blue and some other companies has been successful judging by the responses in this thread.
To set the record straight, there is no one diet that will cure or prevent any condition in every animal it is fed to.
Reading ingredient lists is a start, but unless you know how to interpret them and can judge the actual quality of those ingredients in that can or bag, you are pretty much left with useless information.
Eliminating a food because it has byproducts is folly. Quality byproducts are the best way to provide many of the essential nutrients necessary for healthy individuals.
Pet Food Nutrition is a website that provides accurate information about pet nutrition including they myths about byproducts and corn :B.
Bone meal provides the necessary calcium for proper functioning animal. Unless there is another source, you could eventually end up with a dead animal. If you design a diet or supplement meat (phosphorus source) without the proper calcium content you will create renal secondary hyperparathyroidism.
I'm glad diet cleared up the problem in your dog, but to everybody else, don't read too much into this situation. The effects could be duplicated in some instances, but by no means are universal.
Doug, DVM
Doug & Sandy
Kaylee
Winnie 6 1/2 year old golden
2008 Southwind 2009 Honda CRV