Fatty liver disease means too much fat has built up inside your liver cells. The most common form, now called MASLD (metabolic dysfunction-associated steatotic liver disease, previously NAFLD), is linked to excess weight, diabetes and high cholesterol rather than heavy drinking. It usually causes no symptoms, but it can be found on an ultrasound and, in most people, improved or even reversed with steady weight loss, healthier eating and regular exercise.
Key takeaways
- In 2023, international liver societies renamed NAFLD as MASLD, and NASH as MASH, to better reflect the link with metabolic health.
- A 2022 meta-analysis estimated that about 38.6% of Indian adults have fatty liver, with much higher rates in people with obesity or diabetes.
- Most people have no symptoms; fatty liver is often discovered on an ultrasound or abnormal liver tests done for another reason.
- Losing about 7–10% of body weight can reduce liver fat and inflammation substantially, and in some people improve scarring.
- What matters most is whether scarring (fibrosis) is developing, which tests like FIB-4 and FibroScan help assess.
What is fatty liver and why the new name?
When fat makes up more than a small share of the liver, the condition is called hepatic steatosis, or fatty liver. In June 2023, a multi-society consensus of international liver associations introduced new terms to describe the disease more accurately and reduce stigma.
| New term | What it means | Older term |
|---|---|---|
| SLD (steatotic liver disease) | Umbrella term for fat in the liver from any cause | — |
| MASLD | Liver fat plus at least one cardiometabolic risk factor | NAFLD |
| MASH | MASLD with inflammation and liver cell injury | NASH |
| MetALD | MASLD in people who also drink moderate-to-higher amounts of alcohol | — |
The cardiometabolic risk factors
A diagnosis of MASLD needs liver fat plus at least one of the following:
- Overweight, or a large waist (for Asian populations, a BMI of 23 or more is used, or waist above 80 cm in women and 94 cm in men)
- Raised blood sugar, prediabetes or type 2 diabetes
- Blood pressure of 130/85 mmHg or higher, or treatment for it
- High triglycerides, or treatment for cholesterol
- Low HDL ("good") cholesterol
How common is fatty liver in India?
Fatty liver has become one of the most common liver conditions in India. A 2022 systematic review and meta-analysis in the Journal of Clinical and Experimental Hepatology estimated the pooled prevalence at about 38.6% in adults and 35.4% in children studied, roughly one in three.
Rates were far higher in high-risk groups, including about 63% of children with obesity. In 2021, India integrated fatty liver disease into its national programme for non-communicable diseases.
Why Indians are at higher risk
South Asians tend to store more fat around the abdomen and in organs, even at a normal body weight. This is why "lean" fatty liver is seen in India, and why lower BMI and waist cut-offs are used for Asians. Diets high in refined carbohydrates, sugar and fried foods, along with low physical activity, add to the risk.
How fatty liver progresses
Most people with simple fatty liver do not develop serious liver damage. In some, however, the disease moves through stages over many years.
- Steatosis: fat builds up, but there is little or no inflammation.
- MASH: fat causes inflammation and injury to liver cells.
- Fibrosis: ongoing inflammation leads to scar tissue in the liver.
- Cirrhosis: extensive scarring that can affect liver function and raise the risk of liver failure and liver cancer.
People with fatty liver also have a higher risk of heart disease, so managing blood pressure, sugar and cholesterol is part of treatment.
Symptoms
Fatty liver is often called "silent" because it rarely causes symptoms in the early stages. Some people notice:
- Tiredness or feeling generally unwell
- A dull ache or discomfort in the upper right side of the abdomen
Symptoms of advanced disease, such as yellow eyes or skin, swelling of the legs or abdomen, and confusion, appear only when cirrhosis develops.
Tests for fatty liver
| Test | What it shows |
|---|---|
| Ultrasound abdomen | Detects moderate-to-severe liver fat; widely available and inexpensive |
| Liver function tests (LFT) | ALT, AST and other markers; may be raised, but are often normal even with fatty liver |
| Blood sugar, HbA1c, lipid profile | Checks for diabetes and cholesterol problems that drive MASLD |
| FIB-4 score | A calculation from age, AST, ALT and platelet count that estimates fibrosis risk |
| FibroScan (transient elastography) | Measures liver stiffness (scarring) and liver fat without a needle |
| Liver biopsy | Rarely needed; used when the diagnosis or stage is uncertain |
Normal liver enzymes do not rule out fatty liver or fibrosis. Doctors increasingly use FIB-4 first, followed by FibroScan if the score suggests risk, to decide who needs specialist care.
How to reverse fatty liver
There is no single pill that cures fatty liver. Lifestyle change is the most effective treatment, and the liver can recover well.
Weight loss: the strongest evidence
A landmark 2015 study in Gastroenterology followed 293 people with biopsy-confirmed NASH through a year-long lifestyle programme. Those who lost at least 10% of their body weight saw NASH resolve in about 90% of cases, and fibrosis improved in 45%. Even 5–7% weight loss brought meaningful improvement in liver fat and inflammation.
Aim for gradual loss of around half to one kilogram a week. Crash diets and very rapid weight loss can sometimes worsen liver inflammation.
Eating pattern
- Cut down on sugar, sweets, sugary drinks and packaged juices, which feed liver fat.
- Reduce refined carbohydrates such as maida, white bread and large portions of white rice.
- Choose whole grains, millets, dals, vegetables, fruit, nuts and seeds.
- Limit fried snacks, vanaspati and ultra-processed foods.
- A Mediterranean-style pattern, rich in vegetables, legumes, whole grains and healthy oils, has good evidence for liver health and can be adapted to Indian meals.
Physical activity
Aim for at least 150 minutes of moderate activity a week, such as brisk walking, cycling or swimming, plus some strength exercises. Exercise reduces liver fat even before you lose much weight.
Alcohol
Alcohol adds direct damage on top of metabolic fatty liver. If you have MASLD, it is safest to cut down sharply or stop. If you already have fibrosis or cirrhosis, avoid alcohol completely.
Manage related conditions
Keeping diabetes, blood pressure and cholesterol controlled protects your liver and heart. Some medicines help in specific situations, but your doctor must choose them. Avoid unproven "liver detox" products.
When to see a hepatologist
Your family doctor can manage most people with simple fatty liver. Ask about referral to a liver specialist (hepatologist or gastroenterologist) if:
- Your FIB-4 score or FibroScan suggests significant scarring
- Your liver enzymes remain high despite lifestyle changes
- You have diabetes plus fatty liver and other risk factors for fibrosis
- There is any sign of cirrhosis
When to see a doctor
See a doctor if an ultrasound shows fatty liver, if you have diabetes or obesity and have never had your liver checked, or if you have ongoing pain in the upper right abdomen.
Seek urgent medical help if you notice:
- Yellowing of the eyes or skin (jaundice)
- Vomiting blood, or black, tarry stools
- Sudden swelling of the abdomen or legs
- Confusion, extreme drowsiness or difficulty staying awake
In an emergency, call 108 or 112 in India.
Frequently asked questions
Is fatty liver reversible?
In many people, yes. Steady weight loss of about 7–10%, regular exercise and limiting alcohol can reduce liver fat and inflammation substantially. Even early scarring can improve, though advanced cirrhosis is much harder to reverse.
Can thin people get fatty liver?
Yes. "Lean" MASLD is relatively common in South Asians, who tend to store fat around the organs even at a normal weight. Diet, inactivity, insulin resistance and genetics all play a role.
Is grade 1 fatty liver on ultrasound serious?
Grade 1 means a mild amount of fat seen on ultrasound. It is a useful warning sign rather than a cause for alarm. Talk to your doctor about checking your sugar, cholesterol and fibrosis risk, and about lifestyle steps.
What is the difference between NAFLD and MASLD?
They describe largely the same group of people. MASLD is the newer term adopted in 2023, which requires at least one metabolic risk factor such as excess weight, diabetes or high blood pressure. The change focuses on the cause rather than simply excluding alcohol.
Are liver detox drinks or supplements helpful?
There is no good evidence that detox drinks or supplements cure fatty liver. Some herbal and dietary products can actually injure the liver. Talk to your doctor before taking anything new.
Sources
- New MASLD nomenclature – American Association for the Study of Liver Diseases (AASLD)
- Prevalence of non-alcoholic fatty liver disease in India: a systematic review and meta-analysis – J Clin Exp Hepatol, 2022
- Weight loss through lifestyle modification significantly reduces features of nonalcoholic steatohepatitis – Gastroenterology, 2015
- Operational guidelines for integration of NAFLD with NPCDCS – Press Information Bureau, MoHFW
- Non-alcoholic fatty liver disease (MASLD) – NHS