I started using this food because my dog's allergies started to get really bad - had to start taking expensive pills & even that wasn't helping. Ended up at the emergency vet clinic on a Saturday due to an infection on the skin, and that is when I started researching dog food. I came across a site that talked about a pill that helped with dog allergies but they stated the most important thing was the dog food you use. It gave a bunch of dog food options and so that is how I stumbled upon this dog food. I decided to try this food & so far it is working great for my dog. I did not try the pills the site was trying to sell, just switched my dogs food and it made a HUGE difference. She actually had old hair fall out in clumps when she first started on this food - the old hair had old skin cells attached to it - very gross. but then new hair growth came in and it was very soft. I didn't realize the stinky smell from my dog was due to her dog food until I made the switch and with the new hair coming in she started smelling better too. She had what looked like an old dog callous (she's 11) but with the new dog food that area cleared up and now has fresh dog hair. She also had problems with her eyes getting cloudy, a specialist said it was because her body could not process fats correctly, instead the fats were depositing on her eyes and would probably cause her to go blind. He said the best thing for her is to only eat very low fat dog food (prescription grade) and no treats. My dog was not overweight at all but I still followed those orders & that is how I believe she ended up with such bad allergies. With this dog food her eyes actually seem better, definitely not getting worse. They will probably never be fully clear again but at least I don't have to worry about the cloudy covering causing her to lose her eye sight anymore. The single protein & single grain is what's best about this dog food. My regular vet said that is what is best to look for. I highly recommend this dog food. It is a little expensive, although compared to prescription food it is cheaper than what I was paying. It is so worth it!