The link below goes to an article about veterinary pseudoscience and why you should be aware of it for your dog. If you want to go on an all-kale diet for yourself, go for it. If you want to put your pet on an all-kale diet, you are an idiot and guilty of cruelty, even if you believe the BS.
As the author states:
“My Buddy is 11 lbs. He’s afraid of the rain. He needs prescription dog food or else crystals build up in his urinary tract and he pisses blood. He and nature don’t coexist very well. Nature really doesn’t give a shit whether Buddy lives or dies.
“But I do care.”