What is Nonalcoholic Fatty Liver Disease? Understanding Liver Health Beyond Alcohol Use
Nonalcoholic Fatty Liver Disease (NAFLD) is a condition in which excess fat builds up in the liver of individuals who consume little to no alcohol. NAFLD has become one of the most common liver disorders worldwide, affecting an estimated 25% of adults globally. It often occurs in people who are overweight, diabetic, or have metabolic syndrome — though it can also affect individuals with no prior liver history.
NAFLD ranges in severity from simple steatosis (fat accumulation) to nonalcoholic steatohepatitis (NASH), a more serious form involving inflammation and liver cell damage. If left untreated, NASH can progress to fibrosis, cirrhosis, liver failure, or liver cancer.
Symptoms of NAFLD
Many people with NAFLD experience no noticeable symptoms in the early stages, making it difficult to detect without a medical exam. However, as the disease progresses, symptoms may include:
- Fatigue or Weakness: General low energy or tiredness
- Upper Right Abdominal Discomfort: Mild or persistent pain near the liver
- Unexplained Weight Loss: Particularly in later stages of NASH
- Enlarged Liver: Often detected during routine exams
- Signs of Liver Dysfunction: In severe cases, jaundice, swelling, or confusion
Due to its silent nature, NAFLD is frequently discovered through blood tests, imaging, or during evaluations for other conditions.