FATTY LIVER DISEASE (FLD)

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FATTY LIVER DISEASE (FLD)

1. Fatty Liver Disease (Definition)

Fatty Liver Disease (FLD) is a condition in which excessive fat accumulates inside liver cells. Normally, the liver contains only a small amount of fat, but when fat makes up more than 5–10% of the liver’s weight, it is considered fatty liver disease. In its early stages, the condition often causes no noticeable symptoms and may be discovered during routine health examinations. If left untreated, fatty liver can progress to inflammation (steatohepatitis), fibrosis, cirrhosis, and eventually liver failure. There are two major types: Non-Alcoholic Fatty Liver Disease (NAFLD) and Alcoholic Fatty Liver Disease (AFLD).

2. Common Causes of Fatty Liver Disease

Several factors contribute to the development of fatty liver disease. Obesity is the most common cause because excess body fat increases fat storage in the liver. Type 2 diabetes and insulin resistance impair normal glucose metabolism, leading to fat accumulation. High levels of cholesterol and triglycerides also increase the risk. Excessive alcohol consumption damages liver cells and promotes fat deposition. An unhealthy diet rich in sugar, refined carbohydrates, and processed foods further contributes to fatty liver. Lack of regular physical activity slows metabolism and encourages weight gain, making fatty liver more likely to develop over time.

3. Symptoms of Fatty Liver Disease

Most people with fatty liver disease experience no symptoms during the early stages. As the disease progresses, common symptoms include persistent fatigue, weakness, and a feeling of discomfort or heaviness in the upper right side of the abdomen, where the liver is located. Some individuals may experience unexplained weight loss, particularly in advanced stages. Loss of appetite, nausea, and reduced energy levels may also occur. In severe cases, liver damage can lead to jaundice, swelling of the abdomen, and confusion. Early diagnosis is important because lifestyle changes can often reverse fatty liver before permanent liver damage occurs.

4. Prevention of Fatty Liver Disease

Fatty liver disease can often be prevented through healthy lifestyle choices. Eating a balanced diet rich in fruits, vegetables, whole grains, lean proteins, and healthy fats helps reduce liver fat. Regular exercise for at least 30 minutes daily improves metabolism and promotes weight loss. Maintaining a healthy body weight significantly lowers the risk of fatty liver. Avoiding or limiting alcohol consumption protects liver cells from damage. Reducing sugary drinks, processed foods, and unhealthy fats is equally important. Managing blood sugar, cholesterol, and blood pressure through regular medical check-ups further reduces the risk of developing liver disease.

5. Types of Fatty Liver Disease (NEET Quick Fact)

Fatty liver disease is mainly classified into two types. Non-Alcoholic Fatty Liver Disease (NAFLD) occurs in people who consume little or no alcohol and is commonly associated with obesity, diabetes, insulin resistance, and metabolic syndrome. It is now one of the leading causes of chronic liver disease worldwide. Alcoholic Fatty Liver Disease (AFLD) develops due to excessive alcohol intake, which damages liver cells and promotes fat accumulation. Both conditions may progress to inflammation, fibrosis, cirrhosis, and liver failure if untreated. Early diagnosis and lifestyle modification can prevent disease progression and improve liver health.

6. Complications if Left Untreated

If fatty liver disease is not treated, excess fat in the liver gradually causes inflammation, leading to a condition known as steatohepatitis. Persistent inflammation results in fibrosis, where scar tissue replaces healthy liver tissue. Over time, fibrosis may progress to cirrhosis, an irreversible stage characterized by severe scarring and reduced liver function. Cirrhosis increases the risk of liver failure and liver cancer (hepatocellular carcinoma). Advanced liver disease can also cause portal hypertension, fluid accumulation in the abdomen, internal bleeding, and confusion. Early treatment can prevent these serious complications and preserve normal liver function.