Fatty liver will also be assessed by ultrasonography of liver at the beginning of study and again after 12 weeks of intervention. On ultrasonography, severity of fatty liver will be quantitated using a scoring system (0 = no fatty liver, 1 = mild fatty liver, 2 = moderate fatty liver and 3 = severe fatty liver). Automated body composition analyzer (BCA) will also be used to assess body composition at 0 and 12 weeks.