I have bought 3 copies so far, and given 2 away – and I haven't finished yet – there are so many people I want to give it to. The first person I sent one to was our daughter whose dog is 12 yo and has cancer throughout her body. And we went to visit our daughter 6mths after the new diet was started, to encourage her that it was time to put her dog out of it's misery, when we got there we found her old dog bouncing around and playing with the cat again, with a lovely shiny black coat. We couldn't believe the change in this dog, it was truly remarkable! If you love your cat or dog, put them on this diet smartly! And the book is such a reasonable price too! I'm not saying that the dog is cured of cancer though, but her quality of life is hugely improved – it was a delight to see!