COULD YOUR FATIGUE BE FROM FATTY LIVER DISEASE? PLUS, 4 OTHER EARLY SYMPTOMS

Medically reviewed by Robert Burakoff, MD

• Fatty liver disease can cause fatigue and upper-right abdominal pain in early stages.
• Metabolic dysfunction-associated steatotic liver disease is linked to obesity and type 2 diabetes.
• Untreated fatty liver disease may progress to cirrhosis, leading to liver failure.

Fatty liver disease can happen when fat builds up in the liver. This fat buildup can cause inflammation, fatigue, and, in severe cases, liver damage.

Early Symptoms

There are two main types of fatty liver disease:

• Alcohol-associated liver disease (ALD), resulting from heavy alcohol use over a long time
• Metabolically-dysfunction-associated steatotic liver disease (MASLD), linked to metabolic conditions such as obesity and type 2 diabetes 

If you're in the early stages of fatty liver disease, fat has built up in your liver to the point that the fat makes up more than 5% of your liver’s weight, yet there's no evidence of inflammation or liver damage.

This stage may be called simple fatty liver, hepatic steatosis, or metabolic dysfunction-associated steatotic liver disease (MASLD).

People in these stages usually have no noticeable symptoms. However, it is possible to have symptoms such as:

• Fatigue
• Weakness
• Overall feeling of being unwell
• Pain or discomfort in the upper right side of your abdomen, where the liver is located
• Hepatomegaly (enlarged liver)

Progressive Symptoms

As fatty liver disease progresses, the buildup of fat causes inflammation in the liver. This stage of the disease may be called metabolic dysfunction-associated steatohepatitis (MASH) or alcohol-associated hepatitis, depending on the cause.

Over time, inflammation can damage your liver and lead to fibrosis, which occurs when your body begins to make scar tissue in the liver. Inflammation damages liver cells, and scar tissue is your liver’s way of trying to repair those cells.

Once fatty liver disease has progressed to MASH or alcohol-associated hepatitis, symptoms are more likely to occur.

Still, many people do not have noticeable symptoms at this point. Along with possible early-stage symptoms like fatigue, other signs and symptoms of progressing fatty liver disease may include:

• Itchy skin
• Increased thirst
• Bloating
• Decreased appetite
• Loss of mental clarity
• Mood swings
• Edema (fluid buildup) in your lower legs
• Fever (in those with alcohol-associated hepatitis)
• Jaundice (yellowing of the eyes and skin)

Often, symptoms like these may indicate that fibrosis has progressed to cirrhosis (permanent scarring of the liver). In cirrhosis, scar tissue replaces healthy tissue and stops your liver from functioning properly.

End-Stage Symptoms

If fatty liver disease goes unmanaged, it may lead to cirrhosis.

Ultimately, cirrhosis can progress to end-stage liver disease, or liver failure. Liver failure means your liver can no longer perform its functions in the body. People with liver failure typically need a liver transplant to survive.

Symptoms of cirrhosis and liver failure can include all the symptoms above, along with:

• Nausea with vomiting
• Weight loss
• Muscle cramps or weakness
• Muscle loss 
• Easy bleeding or bruising
• Memory loss
• Sleep disorders
• Sexual dysfunction
• Ascites (fluid buildup in the abdomen)

What Are the Symptoms in Children?

Although fatty liver disease most commonly affects older adults, it can also affect children.

As rates of obesity among children are rising, so are rates of fatty liver disease. Currently, up to 1 in 10 children ages 2-19 have MASLD.

Like adults, children with fatty liver disease may have no symptoms unless the condition has progressed to a more severe stage. Along with fatigue and abdominal discomfort, symptoms in children may include:

• Headaches
• Irritability
• Trouble concentrating
• Depression or anxiety
• Changes in skin color near the joints, on the back of the neck, or on the upper back

When Should You Contact a Doctor?

Fatty liver disease can be a serious condition with life-threatening complications.

With early diagnosis and management, you may be able to reverse the damage fatty liver disease causes. If you experience any of the following symptoms, contact a doctor:

• Persistent fatigue or weakness
• Discomfort or pain in the upper right part of your abdomen
• Unexplained weight loss or weight gain
• Jaundice
• Swelling in the legs or abdomen

If you have risk factors for fatty liver disease, such as obesity, type 2 diabetes, hepatitis C, or heavy alcohol use, talk to your doctor about screening and prevention.

Questions To Ask Your Provider

If you're concerned about your liver health, here are some questions you can ask your doctor:

• What risk factors do I have for fatty liver disease?
• What lifestyle changes can I make to reduce my risk of fatty liver disease?
• What support is available to help me reduce my alcohol use?
• What new or worsening symptoms should I watch out for that could point to fatty liver disease?

Frequently asked Questions

What are the stages of fatty liver disease?

Officially, healthcare providers stage the progression of fatty liver disease by the extent of scar tissue, called fibrosis, in your liver. The stages range from stage 0 (no fibrosis) to stage 4 (cirrhosis). Less formally, fatty liver disease can be categorized into three main stages: steatosis (fat buildup in the liver), hepatitis (inflammation in the liver), and cirrhosis (permanent liver scarring).

What are the worst foods for fatty liver disease?

Diet has a big impact on fatty liver disease. To help prevent the condition from occurring or worsening, it may help to avoid foods that are high in saturated fat. Examples include fried foods, fatty meats, and dairy products. Foods high in simple carbs and sugars can also contribute to fatty liver disease. Examples to avoid include sweetened drinks, fruit juice, white rice, and white bread.

What can be mistaken for fatty liver disease?

Fatty liver disease often causes no symptoms early on, so it can be difficult to diagnose. When symptoms do occur, they can look like those of many other conditions. Doctors must distinguish fatty liver disease from hepatitis C, Wilson disease, Reye syndrome, and several other conditions when making a diagnosis. They will also determine whether or not fatty liver disease was caused by alcohol consumption.

Read the original article on Health

2025-08-10T11:05:17Z