Screening for Non-Alcoholic Fatty Liver Disease (NAFLD) among Obese and Overweight Children: Prevalence and predictors
Abstract Background: Non- alcoholic fatty liver disease (NAFLD) is increasingly recognised in obese and overweight children. NAFLD is the most common cause of chronic liver disease in these children. Objectives: To assess the prevalence of NAFLD and to identify the anthropometric, metabolic risk factors for NAFLD. Materials and methods: This cross sectional study was done with 154 overweight and obese children. The study population was divided into 2 groups based on the presence or absence of NAFLD by screening with ultrasonography and/or alanine transaminase levels. Anthropometric (Body mass index, waist circumference) and biochemical parameters (Total cholesterol, triglyceride, high density lipoprotein, low density lipoprotein, very low density lipoprotein, Insulin, Homeostasis model assessment of insulin resistance (HOMA-IR), alanine transaminase, aspartate transaminase) were compared between these two groups. Results: NAFLD was diagnosed based on abnormal screening in 79 (51.3 %) overweight and obese children.. No age or gender difference was noted between 2 groups. NAFLD patients did not differ significantly from patients without NAFLD in age, Body mass index, systolic blood pressure, diastolic blood pressure and waist circumference. LDL Cholesterol levels were found significantly higher in the NAFLD group. There was no significant difference found in lipid profile apart from LDL cholesterol, aspartate transaminase and HOMA-IR between 2 groups. Conclusion: NAFLD is common in overweight and obese South Indian children. High LDL cholesterol level is a risk factor for NAFLD in these children. Screening of this high risk group for early diagnosis of NAFLD is essential to prevent and monitor further progression of the disease.