Fatty liver disease or nonalcoholic steatohepatitis or NASH is a metabolic illness that consists of an accumulation of fat in the hepatic cells. Alcohol is the most frequent cause of the build-up of fat in the liver, but when alcohol is not a cause in its development, another origin or cause must be stressed.
Why fat accumulates in the liver is not known with certainty but some mechanisms are very important in the development of the disease, such as insulin resistance, oxidative stress and the liberation of endotoxins, which favor the development of a series of reactions that determine the presence of inflammation and cirrhosis.
Steatohepatitis encompasses a set of clinical conditions that go from the simple presence of fat in the tissue to the development of a hepatic inflammation with the possibility of developing fibrosis, and finally, leading to chronic hepatic damage.
Approximately between 20 – 30% of adults in the general population suffer from this disease and this number increases to between 70 – 90% in those persons who are obese, have diabetes, hypercholesterolemia and hypertriglyceridemia (high levels of blood fats and cholesterol).