What Is Fatty Liver Disease? A Complete Guide for Singaporeans

Fatty liver disease is one of Singapore’s most underdiagnosed health conditions. Despite affecting an estimated 40% of the adult population, many Singaporeans have never heard of it — or assume it only affects heavy drinkers. The reality is quite different.

If you’ve been told you have a “fatty liver” after a health screening, you’re far from alone. Non-alcoholic fatty liver disease (NAFLD) has become increasingly prevalent in Singapore, driven largely by our modern diet and sedentary lifestyles. Understanding what fatty liver is, what causes it, and how to address it through diet and lifestyle changes can make a significant difference to your long-term health.

What Is Fatty Liver Disease?

Fatty liver disease occurs when excess fat accumulates in liver cells. A healthy liver contains a small amount of fat, but when fat makes up more than 5–10% of the liver’s weight, the condition is classified as fatty liver disease.

There are two main types:

• Alcoholic fatty liver disease (AFLD): Caused by excessive alcohol consumption.
• Non-alcoholic fatty liver disease (NAFLD): Occurs in people who drink little or no alcohol. This is the form we’ll focus on, as it’s far more common in Singapore.

NAFLD is closely linked to metabolic syndrome — a cluster of conditions including obesity, insulin resistance, high blood pressure, and abnormal cholesterol levels. Research from the National University Hospital (NUH) Singapore and other local institutions confirms that NAFLD rates are rising alongside increasing rates of type 2 diabetes and obesity.

Why Is Fatty Liver So Common in Singapore?

Singapore’s NAFLD prevalence is among the highest in Asia, with studies estimating that roughly 40% of Singaporean adults may have some degree of fatty liver. Several factors contribute to this:

• High-carbohydrate diets: White rice, noodles, bread, and sweetened drinks are staples for many Singaporeans. Excess refined carbohydrates are converted to fat in the liver through a process called de novo lipogenesis.
• Sugary beverages: Bubble tea, kopi with condensed milk, canned drinks, and fruit juices contribute significant amounts of fructose, which is processed almost entirely by the liver and directly promotes fat accumulation.
• Sedentary lifestyles: Long working hours and desk-bound jobs mean many adults get far less physical activity than recommended.
• Genetic predisposition: Asian populations, including Chinese, Malay, and Indian ethnic groups, appear to have a higher genetic susceptibility to NAFLD, even at lower body weights compared to Western populations.
• Visceral fat: Singaporeans tend to carry more visceral (abdominal) fat relative to their body mass index (BMI), a known risk factor for liver fat accumulation.

Symptoms of Fatty Liver Disease

One of the most concerning aspects of NAFLD is that it is often completely silent. Most people with fatty liver have no symptoms at all, which is why the condition frequently goes undetected until a routine blood test or ultrasound reveals it.

When symptoms do appear, they may include:

• Fatigue and general tiredness
• A dull ache or discomfort in the upper right abdomen
• Unexplained weight gain, particularly around the midsection
• Difficulty losing weight despite dietary efforts

In more advanced stages, symptoms may include jaundice (yellowing of the skin and eyes), swelling in the abdomen or legs, and easy bruising. However, these typically only appear once significant liver damage has occurred.

The Four Stages of Fatty Liver Disease

NAFLD is a progressive condition that can advance through four stages if left unaddressed:

The good news: Stages 1 and 2 are largely reversible with appropriate dietary and lifestyle interventions. Even stage 3 fibrosis can improve with sustained changes. This is why early detection and action are so important.

How Is Fatty Liver Diagnosed?

Fatty liver is typically diagnosed through one or more of the following methods:

• Blood tests: Elevated liver enzymes (ALT and AST) may suggest liver inflammation, though they can be normal even in people with NAFLD.
• Ultrasound: An abdominal ultrasound is the most common initial screening tool. It can detect fat in the liver but cannot determine the degree of inflammation or fibrosis.
• FibroScan: A specialised ultrasound-based test that measures liver stiffness, helping to assess the degree of fibrosis. Available at most major hospitals in Singapore.
• MRI: Magnetic resonance imaging provides the most accurate non-invasive assessment of liver fat content.
• Liver biopsy: The gold standard for diagnosis, though it is invasive and typically reserved for cases where other tests are inconclusive.

If you are over 40, overweight, have diabetes, or have a family history of liver disease, it is worth discussing liver screening with your doctor during your next health check-up.

How Diet Affects Fatty Liver — and How It Can Help

Diet is both a primary cause and a primary solution for NAFLD. Research consistently shows that what you eat has a direct impact on liver fat levels.

Foods and Habits That Harm the Liver

• Refined carbohydrates: White rice, white bread, pastries, and noodles spike blood sugar and drive fat storage in the liver.
• Added sugars and fructose: Sugary drinks, desserts, and sauces (including ketchup and sweet chilli) contribute heavily to liver fat.
• Excessive alcohol: Even moderate drinking can worsen an already fatty liver.
• Trans fats and heavily processed foods: Fried hawker foods, processed snacks, and fast food promote inflammation.

Foods That Support Liver Health

• Healthy unsaturated fats: Olive oil, rice bran oil, avocado, nuts, seeds, and fatty fish (salmon, mackerel, sardines) provide anti-inflammatory omega-3 fatty acids.
• Lean proteins: Chicken without skin, fish, seafood, eggs, tofu, and tempeh support muscle mass without adding excess saturated fat.
• Non-starchy vegetables: Broccoli, spinach, kale, capsicum, and leafy greens are rich in antioxidants that protect liver cells.
• High-fibre foods: Vegetables, nuts, and seeds support healthy digestion and blood sugar regulation.
• Coffee: Research suggests that moderate coffee consumption (2–3 cups daily) may have a protective effect on the liver.

Liver Health: Foods to Choose vs. Foods to Limit

Can a Healthy Keto Diet Help with Fatty Liver?

Emerging research suggests that reducing carbohydrate intake can be particularly effective for reducing liver fat. A 2020 study published in Cell Metabolism found that a low-carbohydrate diet reduced liver fat by an average of 40% in just two weeks — a result attributed to reduced de novo lipogenesis and increased fatty acid oxidation.

The Healthy Ketogenic Diet (HKD), as advocated by Dr. Lim Su Lin, Head of Dietetics at NUH Singapore, takes this a step further by emphasising the quality of fats consumed. Unlike traditional ketogenic diets that may rely heavily on saturated fats, the HKD prioritises unsaturated fats from sources like olive oil, nuts, seeds, and fatty fish, alongside lean proteins such as chicken without skin, fish, tofu, and eggs.

This approach offers several benefits for liver health:

• Reduces the refined carbohydrates that directly drive liver fat accumulation
• Promotes weight loss, particularly visceral fat loss, which is closely linked to NAFLD improvement
• Improves insulin sensitivity, addressing one of the root causes of fatty liver
• Provides anti-inflammatory omega-3 fatty acids that help reduce liver inflammation

However, it is important to note that any significant dietary change should be discussed with your doctor or a qualified dietitian, especially if you have existing liver conditions.

Practical Tips for Singaporeans to Protect Your Liver

• Swap white rice for cauliflower rice or reduce your rice portion by half, filling the rest of your plate with vegetables and lean protein.
• Choose unsweetened kopi-o or teh-o instead of kopi or teh with condensed milk.
• Replace sugary drinks with water, sparkling water, or unsweetened tea.
• At hawker centres, opt for steamed, grilled, or soup-based dishes rather than fried options.
• Incorporate fatty fish (salmon, mackerel) into your meals at least twice per week.
• Use olive oil or rice bran oil for home cooking instead of palm oil or lard.
• Aim for at least 150 minutes of moderate physical activity per week — even brisk walking counts.
• Get your liver checked during your next health screening, especially if you are over 40 or have risk factors.

The Bottom Line

Fatty liver disease is extremely common in Singapore, but it is also highly manageable — and often reversible — when caught early. The most effective approach combines dietary changes (reducing refined carbohydrates, increasing healthy fats and lean proteins) with regular physical activity and weight management.

If you’re looking for a structured way to reduce refined carbs while enjoying satisfying meals, a healthy keto approach may be worth exploring. The key is focusing on whole, nutrient-dense foods and making sustainable changes you can maintain over the long term.

Medical disclaimer: This article is for educational purposes only and does not constitute medical advice. If you suspect you have fatty liver disease or have been diagnosed with NAFLD, please consult a qualified healthcare professional for personalised guidance.