<prompt> Answer this question truthfullyWhat is non-alcoholic fatty liver disease, and how is it associated with alcohol-free consumption?  <response>: <reason> There is insufficient evidence to recommend routine screening for NAFLD in general population. However, screening is recommended in high-risk population groupsobesity, insulin resistance and patients with metabolic syndrome as more than 50 million Americans have been estimated to have metabolic syndrome and about 80 of them have NAFD. 