I'm dealing with a severe health ailment with my cat right now and ChatGPT has been pretty invaluable in helping us understand what's going on. We've been keeping our own detailed medical log that I paste in with the lab and radiology results and it gives pretty good responses on everything so far. Of course I'm treating the results skeptically but so far it has been helpful and kept us more informed on what's going on. We've found it works best if you give it the raw facts and lab results.
The main issue is that medicine and diseases come with so many "it depends" and caveats. Like right now my cat won't eat anything, is it because of nausea from the underlying disease, from the recent stress she's been through, from the bad reaction to the medicine she really doesn't like, from her low potassium levels, something else, all of the above? It's hard to say since all of those things mention "may cause nausea and loss of appetite". But to be fair, even the human vets are making their own educated guesses.