metabolic dysfunction-associated steatotic liver disease (MONDO_0013209) (MASLD, formerly known as nonalcoholic fatty liver disease or NAFLD) is a type of liver disease that is not caused by alcohol. It typically does not cause symptoms in the early stages, but it can cause health problems due to fat accumulation, inflammation, and scarring in the liver. Also known as: MASLD, NAFLD, NAFLD - nonalcoholic fatty liver disease, fatty liver disease, nonalcoholic, non-alcoholic fatty liver, non-alcoholic fatty liver disease, nonalcoholic fatty liver disease.