Treatment of Non-alcoholic Steatohepatitis (NASH) Patients With Vitamin D

Inclusion criteria: * Patients with 25-OH vitamin D insufficiency * Elevated alanine aminotransferase level * Diagnosis of definite or possible steatohepatitis (NASH) Exclusion criteria: * Cirrhosis, present liver disease other than NASH * Serious diseases limiting life expectancy, * Breast-feeding or pregnant women * Unhealthy alcohol consumption * Drug abuse or substitution therapy * Use of vitamin preparations within the previous 6 months and during the study * Weight loss \>5% within 12 months before study entry * Newly diagnosed Diabetes mellitus requiring medical treatment within 12 months before study entry * Use of anti-obesity drugs * Previous or current hypercalcemia * Chronic renal disease