Are You at Risk for Non-Alcoholic Fatty Liver Disease? Discover 5 Sneaky Signs and How to Protect Your Liver

Non-alcoholic fatty liver disease (NAFLD) is a widespread but often unnoticed condition that affects about 24% of American adults, according to the National Institute of Diabetes and Digestive and Kidney Diseases. Despite its silent nature, early detection of NAFLD can significantly impact its management and treatment. Here’s a closer look at what NAFLD is, how it’s diagnosed, and five subtle signs that you might have it—plus tips to reduce your risk.

What Is NAFLD?

Non-alcoholic fatty liver disease (NAFLD) occurs when excess fat accumulates in the liver cells, leading to potential inflammation and liver damage. While it’s commonly associated with excessive alcohol consumption, NAFLD can also develop in individuals who do not drink alcohol. The exact cause of NAFLD isn’t fully understood, but it’s often linked to obesity, type 2 diabetes, metabolic syndrome, high cholesterol, and high triglycerides.

Trista Best, M.P.H., RD, a registered dietitian with Balance One Supplements, explains, “NAFLD typically results from an imbalance between the liver’s ability to process fats and the amount of fat it absorbs. When the liver is exposed to excess fatty acids due to a high-calorie diet rich in sugars and unhealthy fats, it stores these fats, leading to fat accumulation and potentially severe liver damage over time.”

NAFLD is diagnosed through a combination of medical history, blood tests, physical exams, and imaging tests like ultrasound or MRI, which can reveal fatty deposits and rule out other liver conditions.

5 Sneaky Signs of NAFLD

Unusual Fatigue
Feeling unusually tired or sluggish can be a sign of NAFLD. “This occurs because the liver’s diminished function affects overall energy levels,” says Best. When the liver is overwhelmed with excess fat, it struggles to perform its essential functions, leading to persistent fatigue.
Upper Right Abdominal Pain
Discomfort or pain in the upper right abdomen, where the liver is located, can indicate NAFLD. Inflammation or swelling of the liver due to fat buildup may cause a dull, aching sensation in this area.
Unexplained Weight Gain
Weight gain, particularly around the abdomen, can be a contributor to NAFLD. This may happen even without changes in diet or exercise. “Insulin resistance associated with metabolic syndrome can increase fat storage in the liver, impairing its function,” notes Best.
Dark Urine
If you notice that your urine is darker than usual, it could be a sign of advanced NAFLD. This occurs because the liver’s impaired function leads to a buildup of bilirubin, a pigment resulting from red blood cell breakdown, which darkens the urine.
Yellowing of Skin or Eyes
Jaundice, or a yellowish tint in the skin or eyes, can occur if liver damage from NAFLD progresses. This happens when the liver is unable to process bilirubin effectively, leading to its accumulation.

Best Ways to Reduce Your Risk

Maintain a Healthy Weight
Losing 7 to 10% of your body weight can significantly reduce liver fat and fibrosis, a type of liver scarring. Focus on a balanced diet rich in fruits, vegetables, whole grains, lean proteins, and healthy fats while avoiding excess sugars, refined carbohydrates, and saturated fats.
Limit Alcohol Intake
While NAFLD is not caused by alcohol, excessive drinking can worsen liver damage. For most people, this means limiting alcohol to one drink per day for women and two for men. However, if you have NAFLD, many health authorities suggest abstaining from alcohol altogether.
Exercise Regularly
Regular physical activity helps lower liver fat, improve insulin sensitivity, and manage weight. Aim for at least 150 minutes of moderate-intensity exercise per week or 75 minutes of vigorous activity.
Manage Blood Sugar
Stable blood sugar levels are crucial for preventing liver damage and supporting metabolic health. Controlling blood sugar through diet, exercise, and medication can help reduce NAFLD risk.

Frequently Asked Questions

What causes NAFLD?
NAFLD is caused by excess fat accumulation in liver cells, often linked to obesity, type 2 diabetes, high cholesterol, and other metabolic conditions. Poor diet, lack of exercise, and genetic factors can also contribute.

How does NAFLD differ from fatty liver?
Fatty liver (or NAFL) refers to fat in the liver without inflammation. NAFLD encompasses a range of liver conditions, from fatty liver to more severe forms with inflammation and liver damage.

What are the stages of NAFLD?
NAFLD progresses through four stages:

Fatty Liver (NAFL): Fat buildup without inflammation.
NASH: Fat with inflammation that can harm liver cells.
Fibrosis: Scarring of the liver.
Cirrhosis: Advanced scarring that impairs liver function and can lead to liver failure.

The Bottom Line

Non-alcoholic fatty liver disease affects 1 in 4 Americans and can lead to serious liver damage if left untreated. Early detection of symptoms like excessive fatigue, abdominal pain, weight gain, dark urine, and jaundice is vital for effective management. To lower your NAFLD risk, focus on maintaining a healthy weight, exercising regularly, limiting alcohol intake, and managing blood sugar levels.