Fatty liver disease is a condition characterized by the accumulation of fat in the liver cells. It can be caused by various factors, including alcohol consumption, obesity, diabetes, and certain medications. There are two main types: non-alcoholic fatty liver disease (NAFLD) and alcoholic fatty liver disease (AFLD). NAFLD is more common and typically associated with metabolic risk factors, while AFLD is caused by excessive alcohol intake. Fatty liver disease often has no symptoms initially but can progress to more serious liver damage if left untreated. Management involves lifestyle changes such as weight loss, dietary modifications, and avoiding alcohol.