Home Conditions Fatty liver (MASLD)
Condition · Liver, gallbladder and pancreas
Fatty liver (MASLD)
Fatty liver means too much fat has built up inside the liver cells. It is closely linked to weight around the waist, diabetes and diet, and it usually causes no symptoms. The important question is whether the liver has begun to scar. Liver fat responds well to weight loss, and early scarring can improve.
At a glance
What it is
Fat in the liver from metabolic causes. The medical name is now MASLD; it was earlier called NAFLD.
Common signs
Usually none. It is found on an ultrasound or a blood test.
How it is assessed
Blood tests, a risk score and a FibroScan to measure fat and scarring.
How it is treated
Weight loss of 7 to 10 percent, food and exercise changes, and control of diabetes and cholesterol.
What are the signs of fatty liver?
Early on
- No symptoms in most people
- Tiredness
- A dull ache or heaviness under the right ribs
- Mildly raised liver enzymes on a routine blood test, or a “bright” liver on ultrasound
What the ultrasound grade means
Grades 1, 2 and 3 describe how much fat the scan shows. They do not tell you whether the liver is scarred. See what grade 1 fatty liver means.
See a doctor promptly if you have
- Yellow eyes or skin
- Swelling of the abdomen or legs
- Vomiting blood, or black stools
- Easy bruising
- Confusion or unusual drowsiness
These are signs of advanced liver disease and need urgent assessment.
What it is
What is happening inside?
When the body takes in more energy than it uses, particularly from sugar and refined carbohydrate, and the cells resist insulin, the liver turns the excess into fat and stores it.
In many people the fat sits quietly. In some it causes inflammation (steatohepatitis), and years of inflammation lay down scar tissue (fibrosis). Extensive scarring is cirrhosis.
| Stage | What it means |
|---|---|
| Fat only | No lasting damage. Clears with weight loss. |
| Fat with inflammation | Liver cells are being injured. |
| Fibrosis | Scar tissue is forming. Early scarring can improve. |
| Cirrhosis | Extensive scarring; risk of liver failure and liver cancer. |
Fatty liver also signals a higher risk of heart disease, which is why the whole metabolic picture is treated.
Why it happens
What causes fatty liver?
Insulin resistance and waist weight
The main driver. In Indians it occurs at lower body weights, and fatty liver in people who look lean is common.
Type 2 diabetes and high triglycerides
Each makes scarring more likely.
Sugar and refined carbohydrate
Sugary drinks, sweets and fruit juice deliver fructose, which the liver converts directly to fat.
Alcohol
Even moderate drinking adds to the injury.
Other conditions
PCOS, sleep apnoea and an underactive thyroid.
Medicines
Steroids and a few other long-term medicines. Do not stop any on your own.
How I find out
Which test answers which question?
Liver blood tests and a risk score
It tells us: Whether liver enzymes are raised, and, from a simple calculation using your age and routine blood results, whether scarring is unlikely or needs a closer look.
When I use it: In everyone with fatty liver. Normal enzymes do not rule out scarring.
FibroScan
It tells us: The stiffness of the liver, which reflects scarring, and the amount of fat, in a ten-minute test with no needles.
When I use it: When the risk score is not clearly low, and to follow progress.
Tests for other liver conditions
It tells us: Whether hepatitis B or C, an autoimmune condition or iron overload is contributing.
When I use it: At the first assessment.
Liver biopsy
It tells us: The exact degree of inflammation and scarring.
When I use it: Rarely, when the other tests disagree or another diagnosis is suspected.
Treatment
How is fatty liver treated?
Weight loss
This is the treatment with the strongest evidence:
- Losing about 5 percent of body weight reduces liver fat
- Losing 7 to 10 percent improves inflammation
- Losing 10 percent or more can improve scarring
See how I approach weight loss.
Food and exercise
- Stop sugary drinks and fruit juice; cut back on sweets and refined flour
- Build meals around vegetables, pulses, whole grains, nuts and adequate protein
- At least 150 minutes of brisk activity a week, with strength training
- Avoid alcohol
Exercise reduces liver fat even before weight changes.
Treat the conditions that travel with it
Blood sugar, cholesterol, blood pressure and sleep apnoea are brought under control. Medicines for cholesterol are safe to use with fatty liver.
Medicines for the liver
A small number of medicines help selected patients who have inflammation with scarring. I discuss them when your tests place you in that group. Liver tonics and “cleansing” products are not needed, and some herbal products injure the liver.
When surgery is the right answer
For people who qualify by weight, bariatric surgery brings substantial and lasting improvement in fatty liver.
Root-cause care
The integrative view: what else I look at
The liver sits at the centre of metabolism, so I look beyond the liver itself:
- The gut-liver connection: everything absorbed from the gut reaches the liver first. A fibre-rich diet and a healthy gut lining reduce the load of inflammatory signals arriving there.
- Sleep: short sleep and sleep apnoea worsen insulin resistance and liver fat.
- Muscle: more muscle means better handling of sugar. Protein and strength training are part of treatment.
- Coffee: regular coffee, without sugar, is linked with a lower risk of liver scarring.
- Supplements and herbal products: reviewed at every visit, because some harm the liver.
This work runs alongside the treatment above. It does not replace it.
Recovery
What should I expect?
| When | What happens |
|---|---|
| First visit | Blood tests, a risk score and, where needed, a FibroScan. You learn which stage you are at. |
| Months 3 to 6 | Liver enzymes and liver fat usually improve with weight loss and exercise. |
| Every 1 to 3 years | The risk score or FibroScan is repeated. |
| With cirrhosis | An ultrasound every six months and regular specialist review. |
Questions patients ask me about fatty liver
Is grade 1 fatty liver serious?
On its own, usually not. But the grade describes fat, not scarring. A risk score or FibroScan answers the question that matters.
Can the liver recover?
Yes. Liver fat falls with weight loss, exercise and less sugar, and early scarring can improve. Cirrhosis does not fully heal, which is why it is worth acting early.
I do not drink alcohol. Why do I have fatty liver?
This form of fatty liver is caused by metabolic factors: insulin resistance, waist weight, diabetes and diet. It is now more common than liver disease from alcohol.
I am not overweight. How did I get it?
People of Indian origin store fat inside the abdomen and liver at lower body weights. Waist size, muscle mass, diet and family history matter more than the number on the scale.
Do I need liver medicines or supplements?
Most people do not. Lifestyle change is the main treatment. Specific medicines are reserved for those with inflammation and scarring.
How often should the tests be repeated?
Every one to three years for most people, and more often if scarring is present or diabetes is poorly controlled.
Sources
This page is written for patients and is based on the guidelines and studies below. It is for education and does not replace a consultation.
- Multisociety consensus statement on the new fatty liver disease names (MASLD). Rinella ME et al. Hepatology. 2023. PubMed 37363821
- American Association for the Study of Liver Diseases practice guidance on fatty liver disease. Rinella ME et al. Hepatology. 2023. PubMed 36727674
- European guideline on metabolic dysfunction-associated steatotic liver disease (MASLD). EASL, EASD, EASO. J Hepatol. 2024. PubMed 38851997
- Indian National Association for Study of the Liver guidance on fatty liver disease. Duseja A et al. J Clin Exp Hepatol. 2023. PubMed 36950481
- Review of fructose, sugar and fatty liver disease. Jensen T et al. J Hepatol. 2018. PubMed 29408694