Both alcoholic and nonalcoholic FLD encompass a continuum of histological and pathological diagnoses. All start with steatosis and some progress to steatohepatitis, cirrhosis, and hepatocellular carcinoma. Reversibility between different states is shown with double-headed arrows. Irreversible progression is shown with single-headed arrows. All arrows are dotted since liver disease does not progress in all those at risk.