Nonalcoholic Steatohepatitis (NASH)

What is NASH?

NASH is the most severe form of nonalcoholic fatty liver disease (NAFLD). It occurs when the accumulation of fat in the liver leads to inflammation and cell damage.

While fatty liver, or steatosis, typically causes no harm, NASH is more serious. The inflammation from NASH can lead to scarring, which, if left untreated, can progress to cirrhosis, where the liver is permanently damaged and unable to function properly.

Causes and Risk Factors

The exact cause of NASH is not fully understood, but it is closely linked to metabolic health. It is often part of a group of conditions known as "metabolic syndrome."

You may be at higher risk of developing NASH if you:

• Have excess abdominal weight.
• Have type 2 diabetes or prediabetes.
• Have high cholesterol or triglycerides.
• Have high blood pressure (hypertension).
• Have sleep apnea.

It is important to note that while these factors increase risk, NASH can sometimes occur in individuals who do not fit the typical profile, which is why expert evaluation is so important.

Symptoms of NASH

NASH is often called a "silent" disease because it may not cause any symptoms until significant liver damage has occurred. As a result, many people live with the condition for years without being aware they have it.

When symptoms do appear, they are often vague and can include:

• Fatigue.
• Abdominal discomfort.
• Weakness.
• Unexplained weight loss.

If the disease progresses to cirrhosis, more severe symptoms may appear, such as:

• Jaundice: Yellowing of the skin and eyes.
• Swelling in the legs.
• Fluid accumulation in the abdomen.

Diagnosing NASH

Because symptoms are rare in the early stages, NASH is often discovered during routine blood tests for other conditions.

Your evaluation may include:

Treating and Managing NASH

There are currently no medications approved specifically for treating NASH, but the condition is manageable. Treatment focuses on reducing liver fat, controlling inflammation, and reversing early scarring.

Effective management strategies include:

• Weight loss.
• Dietary Changes: Adopting a heart-healthy diet rich in fruits, vegetables, whole grains, and healthy fats while reducing sugar and refined carbohydrates.
• Exercise: Regular physical activity helps burn liver fat and improves insulin sensitivity.
• Managing Co-existing Conditions: Aggressively treating diabetes, high cholesterol, and high blood pressure is crucial for liver health.