Fatty Liver Disease: Understanding the Shift from NAFLD to MASLD

Credit By: DR MUZAFFAR AHMAD MIR

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• 10 Apr 2026

An Overlooked Epidemic Fuelled by Obesity, Diabetes and Unhealthy Lifestyles

HEALTH WATCH

For years, fatty liver disease sat in the shadows of better-known killers like heart attacks, strokes, and cancer. Yet quietly, it has become one of the most common liver problems worldwide, now affecting an estimated one in three adults in many countries. In South Asia, and increasingly in Kashmir, changing lifestyles, rising obesity, and soaring rates of type 2 diabetes are pushing fatty liver to the forefront of public health.

At the same time, doctors have changed the way they even name this condition. What was long called NAFLD – non-alcoholic fatty liver disease – is now being redefined as MASLD – metabolic dysfunction–associated steatotic liver disease. The science behind this shift is important. It reflects how closely fatty liver is tied to obesity, diabetes, and broader metabolic ill-health and how misleading the old alcohol vs non-alcohol distinction has become. This might sound like a minor technical adjustment. Still, it has real consequences for how people understand their illness and how doctors approach treatment.

What exactly is fatty liver disease?

Simply put, fatty liver disease means that too much fat – mainly triglycerides – has accumulated inside the liver cells. Under a microscope, the liver looks swollen and greasy. In the early stages, this may cause no symptoms at all. People feel normal, and their liver tests may even be only slightly abnormal or sometimes completely normal.

Yet beneath this apparent silence, damage can slowly build up. In some people, fat in the liver triggers inflammation and scarring, a condition once called NASH (non-alcoholic steatohepatitis). Over the years, this can progress to fibrosis, then cirrhosis, and even liver cancer. Strikingly, fatty liver disease is already among the leading causes of liver transplant in many parts of the world.

Traditionally, doctors drew a straight line between alcohol and liver disease. If the patient drank heavily, the liver damage was labelled alcoholic. If not, it was “non-alcoholic” – NAFLD. This simple division is now being questioned for two reasons: first, it hides the central role of obesity and diabetes; second, real life is rarely so neat. Many people with fatty liver drink some alcohol and also have metabolic risk factors.

The powerful link with obesity and diabetes

Today, the strongest driver of fatty liver disease is not alcohol but metabolic syndrome – a cluster of conditions that includes:

1 Central obesity (weight around the abdomen)

2 High blood sugar or type 2 diabetes

3 High blood pressure

4 Abnormal blood lipids (high triglycerides, low HDL cholesterol)

Fatty liver is sometimes called the "hepatic" or liver manifestation of this syndrome. In other words, when someone is overweight, insulin-resistant, and has high blood sugars or lipids, the liver is almost always suffering.

Obesity plays a direct role. Excess calories, especially from refined carbohydrates and sugary drinks, promote fat storage first in fat tissue, and later in organs like the liver. The more visceral fat (around the belly), the higher the chances of fat in the liver.

Type 2 diabetes and insulin resistance are equally central. When the body stops responding properly to insulin, the pancreas produces more and more insulin in an attempt to keep blood sugar under control. High insulin levels, in turn, signal the liver to make and store fat. So the diabetic liver becomes a warehouse for fat, even as the person struggles with rising blood sugars and often weight gain.

Studies have consistently shown that people with type 2 diabetes are much more likely to have fatty liver, and those with fatty liver are more likely to develop diabetes in the future. It is a vicious cycle. In South Asia, where diabetes appears earlier and often in people who are not extremely obese by Western standards, fatty liver may also develop at lower body mass indices.

For Kashmir, this matters deeply. Urbanisation, decreased physical activity, and dietary shifts toward refined grains, fried foods, and sugary beverages are changing our health profile. The same forces driving the diabetes epidemic are also feeding the fatty liver epidemic.

Alcohol vs non-alcohol – why the old labels were confusing

The alcohol vs non-alcohol split once seemed logical. Alcohol, after all, clearly damages the liver. Heavy use can lead to fat accumulation, inflammation, and cirrhosis. So doctors separated "alcoholic liver disease" from everything else. Over time, they noticed a troubling trend: a huge number of patients with fatty liver had little or no significant alcohol use, but did have obesity, diabetes, or high cholesterol. To distinguish these, the term non-alcoholic fatty liver disease (NAFLD) was coined.

However, this label has several problems:

1 It defines a disease by what it is not (non-alcoholic) rather than what it is.

2 It places attention on alcohol and can carry stigma. Some patients feel judged or forced to defend their drinking habits.

3 It ignores the fact that metabolic factors are the real engine of disease progression in many cases.

4 It suggests a clear line between alcoholic and non-alcoholic, when in reality many people drink at low or moderate levels and have obesity or diabetes.

In our own society, where alcohol use is socially restricted, the label NAFLD can create a false sense of security – as if the real issue is merely that one does not drink. A non-drinker may feel, "I am safe from liver disease," even while carrying excess weight and struggling with high blood sugar. The focus shifts away from diet, exercise, and metabolic health.

Why the shift from NAFLD to MASLD?

To address these issues, international health expert groups have proposed a new name: MASLD – metabolic dysfunction–associated steatotic liver disease. While the terminology may sound technical, its message is simple and powerful: if there is fat in the liver, and the person has metabolic risk factors (like obesity, diabetes, high blood pressure, or abnormal lipids), then the condition is metabolically driven.

Key features of this change include:

Positive definition – Instead of saying "non-alcoholic", MASLD is defined by what is present: metabolic dysfunction and liver fat.

Less stigma – The term separates the diagnosis from assumptions about alcohol use. This is particularly relevant in conservative societies where alcohol is sensitive and often hidden.

Better reflects reality – Many people with fatty liver drink modestly or socially. Under the new framework, what matters is whether metabolic factors are present. Alcohol is still important, but it is not the only dividing line.

Public health clarity – MASLD emphasises that fatty liver is part of a larger metabolic crisis involving obesity, diabetes, and cardiovascular disease.

In practice, for a patient in Kashmir, this means that if your ultrasound or blood tests show fatty liver and you also have central obesity, elevated sugar, or cholesterol problems, your condition will increasingly be understood through the lens of MASLD, not just as "non-alcoholic".

What about alcohol now?

The shift to MASLD does not mean alcohol has become irrelevant. Heavy drinking can independently cause fatty liver, inflammation, and cirrhosis. The new thinking tries to integrate alcohol use into a more nuanced picture, rather than using it as the sole gatekeeper of diagnosis.

One can imagine three broad groups:

People with liver fat mainly due to metabolic issues (obesity, diabetes, etc.) and little or no alcohol – this is classic MASLD.

People with primarily alcohol-driven liver disease.

People with both significant metabolic dysfunction and significant alcohol consumption – a combination that is especially dangerous because the risks are multiplied.

For patients and families, the lesson is clear: whether or not one drinks, maintaining a healthy weight, controlling blood sugar, and managing blood pressure and cholesterol are essential to protecting the liver.

Why this matters for Kashmir

Kashmir is undergoing rapid social and lifestyle changes. Traditional diets are being replaced or supplemented by highly processed foods. Long working hours, screen time, and limited open spaces in urban centers mean less physical activity. Meanwhile, diabetes and hypertension rates are rising.

Within this context, fatty liver is no longer a distant Western problem. In clinics across the Valley, ultrasound reports mentioning "fatty liver" have become common. Often, patients are reassured with a simple "it is nothing to worry about". This can be dangerously misleading.

While not everyone with fatty liver will progress to cirrhosis, the presence of MASLD is a red flag that the entire metabolic system is under strain. It not only increases the risk of liver failure but is also strongly linked to heart attacks and strokes. In fact, for many patients with fatty liver, cardiovascular disease will be the first major complication, not liver cancer.

Recognising MASLD as part of this larger pattern should push us to act early – at the level of families, schools, and community health programs.

What can be done?

The good news is that fatty liver, especially in its early stages, is often reversible. The liver has a remarkable ability to heal if we remove the insults and improve metabolic health.

Some key strategies include:

Weight loss: Losing even 7–10% of body weight can significantly reduce liver fat and inflammation.

Healthy diet: Emphasising whole grains, fruits, vegetables, pulses, nuts, and healthy oils; cutting back on sugary drinks, excess rice or refined flour, and deep-fried snacks.

Regular physical activity: Even brisk walking for 30–45 minutes most days of the week can improve insulin sensitivity and reduce liver fat.

Tight control of diabetes and blood pressure: Using medications when prescribed, along with lifestyle changes.

Avoiding unnecessary alcohol: For those who drink, reducing or stopping intake is crucial.

Importantly, these steps are not just for patients already diagnosed with fatty liver. They are also for anyone at risk – people with a strong family history of diabetes, those who are overweight, or those who feel constantly tired and sedentary.

A call for clearer communication

The renaming from NAFLD to MASLD may appear like a technical exercise confined to international guidelines, but it should spark a much broader conversation. Doctors need to explain to patients that fatty liver is not a minor, incidental finding, nor a moral judgment about alcohol use. It is a visible marker of deeper metabolic trouble that requires serious attention. Patients, in turn, must feel empowered to ask questions when they see "fatty liver" on a report, and to seek help in changing their diet and lifestyle.

Public health messages in Kashmir must shift from narrow warnings about alcohol alone to a more comprehensive focus on healthy weight, active living, and metabolic health. Schools and workplaces can play a critical role in promoting physical activity and healthier food choices.

Ultimately, the liver is telling us a story not just about one organ, but about the way we live, eat, and move. Listening to that story and understanding the shift from NAFLD to MASLD, may help us prevent a looming wave of liver and heart disease in the Valley and beyond.

(The Author is a registered medical practitioner and health columnist. Feedback: mir.muzaffar@yahoo.com)