They say that it only takes 24 to 48 hours of not eating for hepatic lipiosis to set in. In plain English, that’s liver failure, and it is fatal if you don’t turn it around. It’s a catch-22 because the most important part of fixing this type of liver failure is to get them to eat a lot of food. But the liver failure makes them lose their appetite or be nauseous. And nausea or loss of appetite alone can cause the liver failure.
As awful and potentially deadly as it is, hepatic lipidosis can be cured. You just have to do the work, which typically means feeding by syringe or a (temporary) surgically installed feeding tube, every few hours until they get well enough that they start eating well on their own again.