It is most likely that cholesterol and bile acid hyposecretion make the AKR strain susceptible to the development of fatty livers and resistant to gallstone formation.
Feeding mice on ethionine and high fat diet induced the model of fatty liver, the contents of TC and TG were measured after pestling the hepatic tissue into pulp.
One study showed therapeutic blood letting improved biomarkers for patients with non-alcoholic fatty liver disease, a condition that commonly appears with diabetes.
There is evidence to suggest that GLP-1s also help with conditions such as sleep apnea, chronic kidney disease, Alzheimer's disease and fatty liver disease.
So if Morgan had the genetic predisposition, it's certainly possible that this extreme diet was a factor in him developing non-alcoholic fatty liver disease.