[Non-alcoholic fatty liver disease--What's new].

Clinical guidelines are essential in implementing and maintaining nationwide stage-specific diagnostic and therapeutic standards. In 2015, the first German expert consensus guideline defined the evidence for epidemiology, pathogenesis, diagnosis and treatment of non-alcoholic fatty liver diseases in adults and children. The German S2k-guideline used an approved development process with de novo literature research since 2010, international guideline adaptation, or good clinical practice. Other recent evidence-based national guidelines and current references were included.