Is fatty liver serious? There are many causes of fatty liver, including obesity, medications, alcohol consumption, toxins, and malnutrition, all of which can lead to fatty liver. Generally, mild fatty liver can be reversed through proper diet and exercise. However, reversing severe fatty liver can be very difficult and challenging. At this time, patients need to have enduring stamina and confidence to cure fatty liver. The main approach is to strictly control the diet with low salt and low fat, avoiding greasy foods. Additionally, appropriate exercise is very important for eliminating fatty liver. Treating fatty liver cannot rely solely on medications, as this addresses the symptoms but not the root cause. Exercise is essential.