Fatty liver disease, also known as “Non-alcoholic fatty liver disease or NAFLD” is the build up of extra fat in liver cells that is not caused by alcohol. It is normal for the liver to contain some fat. However, if more than 5% – 10% percent of the liver’s weight is fat, then it is called a fatty liver (steatosis).
The liver is the second largest organ in your body and is located under your rib cage on the right side. The liver performs many jobs in your body. It processes what you eat and drink into energy and nutrients your body can use. The liver also removes harmful substances from your blood.
NAFLD tends to develop in people who are overweight or obese or have diabetes, high cholesterol or high triglycerides. Rapid weight loss and poor eating habits also may lead to NAFLD. Some people develop NAFLD even if they do not have any risk factors. NAFLD affects up to 25% of people in the United States.
NAFLD often has no symptoms.
When symptoms occur, they may include fatigue, weakness, weight loss, loss of appetite, nausea, abdominal pain, spider-like blood vessels, yellowing of the skin and eyes (jaundice), itching, fluid build up and swelling of the legs (edema) and abdomen (ascites), and mental confusion.
NAFLD is initially suspected if blood tests show high levels of liver enzymes. However, other liver diseases are first ruled out through additional tests. Often, an ultrasound of FibroScan is used to confirm the NAFLD diagnosis.
There are no medical treatments yet for NAFLD. Eating a healthy diet and exercising regularly may help prevent liver damage from starting or reverse it in the early stages.
The more severe form of NAFLD is called non-alcoholic steatohepatitis (NASH). NASH causes the liver to swell and become damaged. NASH tends to develop in people who are overweight or obese, or have diabetes, high cholesterol or high triglycerides. However, some people have NASH even if they do not have any risk factors. Most people with NASH are between the ages of 40 and 60 years. It is more common in women than in men. NASH often has no symptoms and people can have NASH for years before symptoms occur. NASH is one of the leading causes of cirrhosis in adults in the United States. Up to 25% of adults with NASH may have cirrhosis.
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