Inclusion Criteria:  Being between the ages of 11-18 Being obese (BMI ≥95.persentil) Getting a diagnosis of Grade≥1 NAFLD  Exclusion Criteria:  Existence of liver disease (wilson,hepatitis etc.) other than NAFLD Drinking alcohol Having a history of type 1 and type 2 diabetes Using drugs that can cause steatosis Using lipid-lowering drugs Using weight loss medications Having applied dietary therapy for any disease and weight loss Existence of a chronic inflammatory disease Existence of cancer Thyroid dysfunction (hyperthyroid and hypothyroidism) Existence of a history of hepatic virus infection Having a history of parenteral nutrition Being pregnant and breastfeeding Receiving antibiotic treatment within 3 months prior to the study Regularly consuming foods containing probiotic and prebiotic properties and / or using nutritional supplements