Fatty Liver Disease: Causes, Symptoms, Complications, Treatment and Prevention

Fatty liver disease is a situation whereby there is an excess buildup of fat in the liver. Although a small amount of fat in the liver is considered healthy, excess may be unhealthy, especially if it is associated with liver inflammation and damage. The disease may go undetected for several years before advancing to other health problems such as fibrosis, cirrhosis, liver failure, or liver cancer. However, it is comforting to note that fatty liver disease at an early stage can be reversed. The following article offers important insights into the medical condition.

What Is Fatty Liver Disease?

Fat build-up in liver cells leads to a condition medically called steatotic liver disease. This condition can be categorised into different kinds based on the causes. The most prevalent form of this disease is metabolic dysfunction-associated steatotic liver disease (MASLD), formerly referred to as non-alcoholic fatty liver disease (NAFLD).

Metabolic issues like obesity, insulin resistance, type 2 diabetes, hyperlipidemia, hypertriglyceridemia, and hypertension increase the risk of MASLD. Excessive consumption of alcohol is another cause of fatty liver disease. Doctors take into account the amount of alcohol consumed and other factors in diagnosing the cause of liver fat build-up.

What Causes Fatty Liver?

Fatty liver does not occur due to any one specific cause. In MASLD, the development of this disease is clearly associated with the presence of metabolic abnormalities. If the body becomes resistant to the action of insulin, it might end up producing more fatty acids in the liver, thus leading to fatty deposits. The most common causes are:

• Being overweight or obese, particularly having an excessive amount of abdominal fat
• Type 2 diabetes or insulin resistance
• High levels of triglycerides and/or cholesterol
• Hypertension
• Metabolic syndrome
• Lack of physical activity
• A diet rich in excess calories, added sugar and unhealthy fats
• Alcohol consumption is another cause of the buildup of fat in the liver and liver damage.

What Are the Symptoms of Fatty Liver?

One of the hardest things about fatty liver is the lack of symptoms. A person could have an abundance of fat in his or her liver without experiencing any signs at all. However, if symptoms are experienced, some of them include fatigue, weakness and discomfort in the right upper part of the abdomen. 

Advanced liver diseases can manifest symptoms such as jaundice, abdominal and leg swelling, bruising and mental confusion. For this reason, people with conditions such as diabetes, obesity or metabolic syndrome may require medical attention regardless of how healthy they feel.

How Is Fatty Liver Diagnosed?

In most cases, doctors tend to rely on medical history, physical exam, blood tests, and imaging. Some of the liver enzymes measured include ALT and AST; however, normal levels of liver enzymes do not negate liver disease.

The use of ultrasound helps to identify fat deposits in the liver. Doctors may decide to conduct other tests based on their risk, including elastography, which helps to determine liver stiffness and possible fibrosis.

Other blood-based tests that are conducted include FIB-4 scores, among others. These tests help in estimating the possibility of advanced liver fibrosis. There is no need for liver biopsy for all individuals, but it may be needed in some cases where doctors require more information.

What Happens If Fatty Liver Progresses?

A fatty liver is not always the cause of severe liver damage. In certain patients, however, persistent inflammation and damage may cause the formation of scar tissue. The sequence may take place in the following manner:

Fat deposition → inflammation → fibrosis → cirrhosis → liver failure or liver cancer

The more serious form of inflammatory metabolic fatty liver disease is metabolic dysfunction-associated steatohepatitis (MASH). Chronic inflammation may cause fibrosis in some cases. Further progression of fibrosis may finally result in the development of cirrhosis, which may affect the liver’s normal structure and functioning by means of extensive scarring.

The consequences of cirrhosis include ascites, internal bleeding, jaundice, hepatic encephalopathy, and liver failure. Advanced liver disease may also increase the chances of developing hepatocellular carcinoma (liver cancer).

Can Fatty Liver Affect Other Parts of the Body?

It is not just a liver condition. MASLD is intricately related to one’s metabolism as a whole and is linked to diseases like type 2 diabetes, obesity, high cholesterol, and heart disease.

Because of this, the treatment for fatty liver often goes beyond simply trying to lower fat in the liver. Other factors like blood glucose levels, blood pressure, cholesterol, body weight, diet, and exercise are important.

How Is Fatty Liver Treated?

The method of treatment is dependent on the cause and level of the disease.

In the case of MASLD, modifications in lifestyle continue to form an essential part of the treatment. For people suffering from being overweight or obese, weight loss at a moderate pace is highly effective in decreasing the fat content in the liver. Weight loss of 3% to 5% can reduce the fat in the liver, whereas weight loss of more than that can decrease inflammation and liver scarring.

It is important that weight loss occurs gradually and sustainably rather than being a result of crash diets and extended periods of malnutrition.

Physical activity too forms an essential part of the treatment. Aerobic activities like brisk walking, cycling or swimming, along with resistance exercises, have been proven to reduce fat in the liver without weight loss.

What Should You Eat With Fatty Liver?

No food item exists that would miraculously reverse fatty liver. The pattern of the dietary approach is what counts. The dietary approach beneficial for the liver may consist of consumption of fruits, vegetables, whole grains, beans, nuts and seeds as well as minimal processing of other foods. Unsaturated fats, rather than sources of saturated and trans fats, can be consumed.

Foods and beverages providing high amounts of added sugars and excessive calories are to be avoided, especially sugar-sweetened drinks. Portion sizes and calories consumed are significant in case of weight loss recommendations. Detoxifying food patterns is not the goal; healthy body weight maintenance is.

Is Medication Needed for Fatty Liver?

It is not always necessary for individuals with fatty liver to be on medications that act directly on the liver. In some cases, doctors prescribe drugs that address associated conditions like diabetes, high cholesterol, high blood pressure, and obesity.

In more severe cases of MASH with fibrosis, treatment by a specialist may be considered. There have been new advances in treatment in the recent past, including drugs approved specifically for non-cirrhotic MASH patients with moderate or advanced fibrosis.

People with MASH must avoid taking any supplement or herb without consulting a physician. These can be harmful and sometimes even dangerous for the liver.

Can Fatty Liver Be Reversed?

During its early phases, fatty liver may show significant improvement once the cause of the condition is resolved. Weight loss, regular exercise, improved diet, and regulation of blood sugar and cholesterol levels help decrease the liver’s fat content as well as inflammation and fibrosis, if present.

But with severe cirrhosis, there is already a lot of irreversible scarring that has taken place. The patient must still make lifestyle modifications, but these are not enough to reverse existing cirrhosis. The patient must then undergo treatment to prevent additional damage and manage any complications that arise.

How Can Fatty Liver Be Prevented?

Fatty liver prevention essentially comes down to ensuring that you have good metabolism. Exercise, proper nutrition, and a healthy body weight can help prevent the build-up of excess fats in the liver. Other diseases like diabetes, hypertension, and abnormal lipid levels should also be managed effectively. It is also essential to prevent alcohol abuse because alcohol can cause excessive fat storage and liver damage. The most important thing is that people shouldn’t wait until they start experiencing symptoms to take care of their liver health. Since fatty liver may not cause any symptoms, people at risk need to discuss tests with their doctor.

Conclusion

Fatty liver might seem like an inconsequential accumulation of fat, but it must never be underestimated. Even though not everyone suffering from non-alcoholic fatty liver disease develops further problems, the inflammation caused by the disease may result in fibrosis, cirrhosis, failure and cancer of the liver in certain patients. Fatty liver also has a close connection to various other metabolic diseases, making overall health very important.

The good news is that there is still time to turn the situation around. Slow weight reduction, physical activity, healthy dieting, correct alcohol consumption and monitoring of diabetes, high cholesterol levels and blood pressure can all contribute to protecting the organ from complications. In case fatty liver has already been identified, then frequent medical check-ups will be able to find out if the organ merely has an excessive accumulation of fat or is developing inflammation and scar tissue.