Lifestyle Versus Ezetimibe Plus Lifestyle in Patients With Non-alcoholic Steatohepatitis

Inclusion Criteria: * 1.Patients older 18 years * 2.Histological diagnosis of possible or definite NASH, according to Kleiner scorw, within 6 months before randomization - Exclusion Criteria: * 1)Average alcohol consumption \> 20 g per day in women and \> 30 g per day in men * 2)other causes of chronic liver disease 3) History of or planned gastrointestinal bypass or any additional bariatric surgery/intervention 4)Hepatic cirrhosis with Child-Pugh score of B or C, and/or concomitant HCC 5)Recent(within 6 months) or concomitant use of agents known to cause hepatic steatosis 7)Recent(within 6 months)change in dose/regimen or first treatment with vitamin E, C, betaine, s-adenosylmethionine, ursodeoxycholate, sylimarin, fibrate, statin, pentoxyfilline, angiotensin II inhibitors, orlistat, sibutramine 8)Ongoing or recent therapy (within 6 months) with vitamin D or with medications known to affect vitamin D3 metabolism 9)Any additional condition that might interfere with optimal partecipation in the study, according to Investigators opinion; 10)Be pregnant or breastfeeding.