Fatty liver disease is a condition where excess fat builds up in the liver, which can lead to inflammation and damage. This can happen for various reasons, including obesity, excessive alcohol consumption, and certain medications. When the liver is overloaded with fat, it struggles to function properly, which can affect overall health. There are two main types of fatty liver disease: non-alcoholic fatty liver disease (NAFLD) and alcoholic fatty liver disease (AFLD). NAFLD is more common and often linked to obesity and diabetes, while AFLD is caused by heavy drinking. If left untreated, fatty liver disease can progress to more serious liver conditions, such as cirrhosis.