All jokes aside, the consensus seems to be it can be done, but would require regular visits to the vet and testing the cat's urine etc, and even then this would be very experimental.
Easy. Come up with some insane pet feeding scenario, and then assume you saw someone on YouTube vouch for it. Enter discourse. Ensure to present your theory by first saying "I don't know what a cat actually is, but...". Then slowly slide your audience into your scenario about how people in Florida have kept alligators alive by feeding them rotten boat parts with just the right algae and moss on it.