Fatty Liver Disease: The Quiet Condition Weight Loss Can Reverse

The short version

• Fatty liver is now commonly called MASLD. It's closely linked with extra weight, diabetes and high cholesterol.
• Losing 5% of your weight can reduce liver fat. 7 to 10% can improve inflammation, and more may help scarring.
• Cut back on sugary drinks and alcohol, and exercise regularly.
• Ask about a scarring check (often called a FIB-4 score) if you have diabetes or multiple risk factors.

What it is

Your liver stores fat. When too much builds up, unrelated to heavy drinking, it's called metabolic dysfunction-associated steatotic liver disease, or MASLD. You might have heard the older name, NAFLD.

For some people, the fat causes inflammation and damage. This more serious form is called MASH (formerly NASH), and it can lead to scarring (fibrosis), cirrhosis and liver cancer.

Most people have no symptoms, and it's often discovered from routine blood work or an imaging scan done for something else.

Are you at risk?

Your risk is higher if you have:

• Excess weight, especially around your middle
• Type 2 diabetes or prediabetes
• High triglycerides or low HDL
• High blood pressure
• Obstructive sleep apnea or PCOS

You can also have it at a normal weight, especially if you carry weight around your middle.

Getting checked

Liver enzymes (ALT, AST) can be normal even with significant disease. Guidance increasingly recommends a simple calculation called FIB-4, which uses standard blood test results and your age, for people with risk factors. Your clinician may follow up with a special ultrasound scan such as FibroScan.

What helps

The liver can recover well, particularly early on.

Weight loss

According to liver specialists' guidance, roughly:

Go gradually. Very rapid loss can sometimes make liver problems worse, so crash diets are especially a bad idea here.

Food

• Cut sugary drinks and limit added sugar, especially fructose from sweetened drinks.
• Follow a Mediterranean-style pattern, which has the strongest support.
• Keep ultra-processed food and red and processed meats low.
• Coffee seems to be protective in observational studies. If you already drink it, there's no need to stop.

Exercise

Both cardio and strength training reduce liver fat, even when your weight doesn't change much. Aim for at least 150 minutes a week.

Alcohol

If you have any significant liver scarring, doctors generally advise avoiding alcohol completely. If you have fatty liver alone, drink as little as possible. See alcohol.

Other care

Get vaccinated for hepatitis A and B if you're not protected. Manage diabetes, cholesterol and blood pressure, and be careful with supplements, as several have been linked to liver injury. See supplements.

Medications

For MASH with moderate to advanced scarring but no cirrhosis, the FDA approved resmetirom in 2024 and semaglutide (Wegovy) in 2025, both through an accelerated pathway while longer studies continue. They're used alongside diet and exercise, and only for selected patients, so ask a liver specialist if they apply to you. Bariatric surgery can also help some people.

Sources

1. NIDDK: Fatty Liver Disease, under its older name, NAFLD (reviewed 2021)
2. Rinella et al., Hepatology (2023): AASLD practice guidance on fatty liver disease
3. FDA: First Treatment for Liver Scarring From Fatty Liver Disease (2024)
4. AJMC: FDA approves semaglutide for MASH with fibrosis (2025)
5. American Liver Foundation: MASLD

This guide is general information, not medical advice. Please check with a clinician before making big changes, especially if you have a health condition, take medication, or are pregnant. Read the full disclaimer.