Clinical Research Directory

Inclusion Criteria * Ages 13-18, Tanner stage 4-5 * Suspected or diagnosed with NAFLD per fibroscan or liver biopsy within 6 months prior to enrollment as long as participants have not lost more than 5% of total body weight. Their MRI liver fat \>5.5% * Diagnosis of non-alcoholic fatty liver disease (NAFLD) per hepatologist * Sedentary- less than 3 hours of moderate (jogging, swimming, etc.) exercise a week * BMI equal or greater than the 85th percentile for age and gender, this is overweight and obese categories Exclusion Criteria * Use of medications known to affect insulin sensitivity: metformin, oral glucocorticoids within 10 days, atypical antipsychotics, immunosuppressant agents, HIV medications. * Currently pregnant or breastfeeding women. Development of pregnancy during the study period will necessitate withdrawal from the study * Severe illness requiring hospitalization within 60 days * Diabetes, defined as Hemoglobin A1C \> 6.4% * BMI percentile less than the 85th percentile for age and sex. Waist circumference \>200 cm * Anemia, defined as Hemoglobin \< 11 mg/dL * Diagnosed major psychiatric or developmental disorder limiting informed consent * Implanted metal devices that are not compatible with MRI * Use of blood pressure medications * Known liver disease other than NAFLD or AST or ALT \>150 IU/L