I wish the Doctor would have began her article with estimated costs for the ensuing health issues, and drugs to "treat" them and most of all, the pain the creature goes through when afflicted with the health issues she listed she's seen firsthand...
Those people need to go get themselves hamsters.
I have seen some very sick cats as a result of these diets. The consequences of a such diets can reasonably be expected to include diabetes, urinary tract disease, kidney disease, allergies, asthma, inflammatory bowel disease, liver disease, and more.