People who have the fatty liver disease that wasn’t caused by heavy drinking may still need to avoid alcohol if they want to prevent their liver damage from getting worse, a Korean study suggests . Most people have a little bit of fat in their liver, but the fatty liver disease can be diagnosed when more than 5 percent of the liver by weight is made up of fat. If the condition isn’t linked to liver damage from heavy drinking, it’s known as the non-alcoholic fatty liver disease (NAFLD) and is most often associated with obesity and certain eating habits.

For the current study, researchers examined data on 58,927 Korean young and middle-aged adults with NAFLD who had low levels of fibrosis or scarring on the liver. After following half of these patients for at least 8.3 years, 5,630 people had progressed from low to more advanced levels of fibrosis. Moderate drinkers were 29 percent more…