A 55-year-old morbidly obese male with a past medical history significant for hyperlipidemia and prediabetic insulin resistance returns to the clinic following a yearly checkup. His primary care...

A 55-year-old morbidly obese male with a past medical history significant for hyperlipidemia and prediabetic insulin resistance returns to the clinic following a yearly checkup. His primary care doctor is concerned by his elevated AST and ALT. He denies alcohol consumption, previous history of hepatitis, and a history of autoimmune disease. His hepatitis panel is negative.

A liver biopsy demonstrates marked fat deposition. What is his diagnosis?

A. Alcoholic cirrhosis B. Chronic viral hepatitis

C. Nonalcoholic fatty liver disease

D. Autoimmune hepatitis