Could have been hypervitaminosis A caused by polar bear liver. A more likely cause is trichinosis which is carried by all bear species and kills you in 3-4 weeks. I once diagnosed a case in Alaska in an unfortunate young man who had consumed undercooked grizzly bear. He spent 3 weeks in hospital and damn near died. He started out as a strapping 6’4” 250lb. sheetrock hanger and when I encountered him at a local grocery store 6 months later he had lost 100 lbs of muscle and looked about 40 years older.
Guess he missed that epi of “Emergency” in which a couple of guys come in and .... “Oh yeah, we like our hamburgers rare, and Joe got ahold of some bear meat a couple of weeks ago...”