Daijiworld Media Network - Mumbai
Mumbai, Oct 7: A fatty liver does not necessarily mean permanent liver damage. In many cases, particularly when the condition is detected early, reducing liver fat through sustained lifestyle changes can help the liver return towards its normal size and function.
A fatty liver develops when excess fat accumulates in the liver. The condition, now commonly referred to as metabolic dysfunction-associated steatotic liver disease (MASLD), is often associated with overweight or obesity, diabetes, high cholesterol, high blood pressure and physical inactivity. It may not cause noticeable symptoms and is often detected incidentally through blood tests or imaging.
According to Dr Ameet Mandot, Director – Hepatology, Gleneagles Hospital Parel, the extent to which a fatty liver can recover depends largely on the amount of fat accumulated, the presence or absence of inflammation and fibrosis, and how consistently the underlying risk factors are addressed.
Can the liver return to its normal size?
Yes, in many cases. When excess fat is reduced, the liver can become less enlarged and its function can improve. However, fatty liver does not always result in an enlarged liver, so a reduction in liver fat does not necessarily correspond to a simple change in size.
The important distinction is between uncomplicated fatty liver and more advanced disease. In the early stage, fat accumulation may occur without significant liver injury. If inflammation develops, the condition can progress to metabolic dysfunction-associated steatohepatitis (MASH), followed by fibrosis and, in some people, cirrhosis.
How much weight loss can help?
Weight loss is one of the most effective ways to reduce liver fat in people who are overweight or obese. Current European guidelines recommend aiming for at least 5% sustained weight loss to reduce liver fat, 7–10% to improve liver inflammation, and 10% or more to improve fibrosis.
The American Association for the Study of Liver Diseases similarly notes that a 3–5% reduction in body weight can improve liver steatosis, while greater weight loss, particularly above 10%, is generally associated with improvement in MASH and fibrosis.
This means that even a relatively modest reduction in body weight can be beneficial. For example, for someone weighing 80 kg, a 5% reduction would mean losing about 4 kg, while a 10% reduction would mean losing about 8 kg.
Diet and exercise are important
Weight loss should be gradual and sustainable rather than achieved through crash diets. A balanced diet that limits refined carbohydrates, added sugars, sugar-sweetened beverages and foods high in saturated fat can help reduce liver fat. Diets rich in vegetables, fibre and unsaturated fats, including a Mediterranean-style dietary pattern, are recommended in current guidelines.
Regular physical activity is also important. Exercise can reduce liver fat even beyond its effect on body weight. Current European guidance recommends tailoring physical activity to the individual's ability and preference, with more than 150 minutes a week of moderate activity or 75 minutes of vigorous activity being a useful target for many adults.
How quickly can fatty liver improve?
There is no single timeline for everyone. Improvement depends on the severity of fatty liver, the amount of weight lost, metabolic health and whether lifestyle changes are maintained.
Liver fat can begin to decrease with sustained changes in diet, physical activity and weight. However, improvement in inflammation and fibrosis generally requires greater and longer-term weight loss. The goal should therefore be sustained improvement rather than trying to reverse the condition rapidly.
Does everyone with fatty liver have an enlarged liver?
No. Fat accumulation in the liver does not always cause obvious enlargement. Imaging such as ultrasound, CT or MRI may identify excess liver fat, while additional tests may be needed to determine whether there is inflammation or fibrosis.
This is important because liver size alone does not tell the full story. A person can have fatty liver without significant enlargement, while another person may have a larger liver along with inflammation or other underlying disease.
When does fatty liver become more serious?
The condition becomes more concerning when persistent fat accumulation is accompanied by inflammation and liver-cell injury. This can lead to fibrosis, or scarring, and eventually cirrhosis in some patients. Advanced liver disease can impair liver function and increase the risk of complications, including liver failure and liver cancer.
The good news is that progression is not inevitable. Early diagnosis and sustained lifestyle changes can reduce liver fat and help prevent or slow further damage. People diagnosed with fatty liver should also have associated conditions such as diabetes, high blood pressure, abnormal cholesterol and excess weight appropriately managed.
Ultimately, a fatty liver can often improve considerably, and in early disease the changes may be substantially reversible. The most important factors are early intervention, sustained weight management, a healthy diet, regular exercise and assessment for any underlying inflammation or fibrosis. Those with evidence of liver damage should be evaluated by a doctor or hepatologist rather than relying on liver size alone.