GGT is elevated in liver/biliary tract disease or as a result of moderate to excessive alcohol consumption. Higher GGT levels also increase the risk of several diseases and may point to health problems. This article will cover the functions of GGT , its role in diagnosing or predicting disease, and ways to lower GGT levels in the body. Understand normal and high GGT levels , their implications, and how to lower them. Get tips on maintaining healthy GGT levels . What Level of GGT is Dangerous? A GGT level above 50 U/L (units per liter) is generally considered high and may indicate liver problems or other health concerns. Learn about high GGT levels , exploring potential causes, the significance of elevated GGT , and strategies for lowering GGT levels .