ADVANCED RESEARCH IN GASTROENTEROLOGY & HEPATOLOGY JUNIPER PUBLISHERS Authored by Fadwa M Alsharif Abstract Background & Objective: Chronic B viral hepatitis is a common medical problem all over the world. However, obesity is important risk factors altered immune system response. This study was to examine the correlation between body mass index, serum alanine aminotransferase activity and immunologic response in obese hepatitis B Saudi patients. Subjects and Methods: One hundred fifty Saudi male patients with hepatitis B viral infection (HBV); their age ranged from 30 to 45 (38.64±7.12) years. Patients were divided in to two equal groups according to their body mass index: Group (A): Included patients with HBV, their body mass index (BMI) was greater than 30kg/m2 (the obese group). Group (B): Included patients with HBV, their BMI between 20 and 24kg/m2 (the normal-weight group). Results: An elevation of serum alanine aminot...