Non-alcoholic fatty liver disease (NAFLD) is a condition characterized by the accumulation of fat in the liver of individuals who do not consume excessive amounts of alcohol. It is a common liver disorder and is often linked to obesity, insulin resistance, and metabolic syndrome. NAFLD can range from simple fatty liver (steatosis) to more severe conditions such as non-alcoholic steatohepatitis (NASH), which can lead to liver inflammation, scarring, and ultimately, liver failure. Research in this area focuses on understanding the underlying mechanisms of NAFLD, developing effective diagnostic tools, and exploring potential treatments and prevention strategies.