Overconsumption of alcohol can lead to stress and damage to the liver. Alcohol, e.g. ethanol, is mostly metabolized in the main liver parenchymal cells of the liver, such as hepatocytes, which make up 70% of the liver's mass. as the liver is the primary site of ethanol metabolism, it sustains a great degree of injury, resulting to a wide variety of hepatic lesions such as steaotsis, hepatitis, and fibrosis/cirrhosis. Steatosis is the earliest sign to excessive alcohol intake and it is characterized by the accumulation of fat in the hepatocytes. Steatosis can evolve into steatohepatits, which is a more severe, inflammatory type of liver injury. this phase of liver disease can lead to the development of fibrosis,which causes an excessive deposition of extracellular matrix proteins. This response will begin with an active pericellular fibrosis, which will evolve into cirrhosis. Cirrhosis is identified by the extreme liver scarring, vascular alterations, and ultimately liver failure.