Fatty Liver: A Hidden Health Risk You Need to Understand

More than a quarter of Hong Kong’s population suffers from fatty liver¹, and this condition is affecting younger age groups, which is deeply concerning. You may wonder: is fatty liver really dangerous?

The Hidden Threat of Fatty Liver

Fatty liver is more than just fat accumulation in the liver; it can be an early warning sign of more severe health issues. In the United States, Non-Alcoholic Fatty Liver Disease (NAFLD) is the second and third leading cause of liver transplantation and liver cancer respectively¹. Elevated liver enzymes such as AST and ALT are generally linked to hepatic steatosis, which can serve as an early indicator of advanced liver disease. Liver cancer is listed among Hong Kong’s top ten most common cancers, ranking third in mortality rate² and posing a serious threat to human life. Liver health directly determines our overall quality of life.

The Progression Path from Fatty Liver to Liver Cancer

Hepatic inflammation (triggered by factors including hepatitis viruses, alcohol intake, medication or chemical exposure) leads to liver tissue fibrosis. When inflammation becomes severe and exceeds the liver’s self-repair capacity, cirrhosis develops. Cirrhosis marks the onset of liver failure and acts as a precursor to liver cancer.

The Relationship Between Free Radicals and Fatty Liver

Free radicals are unstable molecules generated during metabolic processes in the human body, capable of triggering oxidative stress and causing cellular damage. Although the exact correlation between free radicals and fatty liver is not fully defined in existing research, it is speculated that free radicals can accelerate fatty liver progression by exacerbating oxidative stress and inflammatory responses. Antioxidants neutralize free radicals and reduce liver damage, making antioxidant-rich dietary intake an essential strategy for liver protection.

Asymptomatic Nature of Fatty Liver

The liver contains no pain receptors, meaning many people fight liver disease without experiencing obvious symptoms. Most patients skip regular health checks, resulting in late detection in the early disease stage. Noticeable symptoms such as ascites and jaundice usually only emerge at advanced stages including cirrhosis, liver failure or liver cancer. Early-stage liver cancer shows almost no visible warning signs, making it extremely hard to detect in time.