Visceral Fat: What It Is, Why It Matters for Asians, and How to Reduce It

What Visceral Fat Is

Body fat is not all the same. Subcutaneous fat sits just under the skin and is the fat you can pinch. Visceral fat sits deeper, surrounding your internal organs in the abdominal cavity. It is not visible from the outside and cannot be pinched, but it is metabolically active in ways that make it more directly linked to health risks than subcutaneous fat.

Visceral fat releases inflammatory compounds and fatty acids directly into the portal circulation that feeds the liver, contributing to insulin resistance, raised triglycerides, and increased cardiovascular risk. High levels of visceral fat are associated with increased risk of type 2 diabetes, heart disease, and certain cancers regardless of overall body weight.

Why Asians Are at Higher Risk

Asians tend to accumulate more visceral fat at a given BMI than people of European descent. This is why Asian health authorities use lower BMI and waist circumference thresholds than the global standard. A person of Asian descent at a BMI of 23 may carry a similar visceral fat burden and metabolic risk as someone of European descent at a BMI of 25 to 27.

Singapore's Health Promotion Board and the WHO Asia-Pacific guidelines use the following thresholds for central fat risk in Asian adults: waist circumference of 90cm or above for men, and 80cm or above for women. A waist-to-hip ratio of 0.90 or above for men and 0.85 or above for women is also used as an indicator.

These lower thresholds exist because the metabolic risk associated with central fat accumulation appears earlier in Asian populations. A healthy BMI does not rule out high visceral fat, particularly in people who are sedentary.

How to Measure Your Risk

The best accessible proxy for visceral fat is waist circumference, measured at the midpoint between the bottom of the ribs and the top of the hip bone. Waist-to-hip ratio adds further information. Neither is a direct measure of visceral fat (which requires imaging) but both are strongly correlated with it and are practical for self-monitoring.

Use the WHR Calculator on this site to calculate your waist-to-hip ratio and see where you sit relative to the Asian-specific thresholds. For more on how waist circumference relates to overall health risk, see the waist circumference health risk guide.

Evidence-Based Ways to Reduce Visceral Fat

Visceral fat responds well to lifestyle changes, often more readily than subcutaneous fat.

Aerobic exercise is the most consistently effective intervention for reducing visceral fat. Studies show meaningful reductions in visceral fat from regular moderate-intensity cardio (brisk walking, cycling, swimming) even without significant changes in overall body weight. Aim for at least 150 minutes of moderate activity per week as a starting point, which aligns with HPB recommendations.

Resistance training adds to the benefit of aerobic exercise and helps preserve muscle mass, which supports metabolic health. A combination of both is more effective than either alone.

Reducing refined carbohydrates and added sugar appears to have a specific effect on visceral fat beyond the effect of calorie reduction alone. White rice, white bread, sugar-sweetened drinks, and processed snacks are the main sources in typical Singaporean diets.

Sleep matters more than many people expect. Short sleep duration is associated with higher visceral fat accumulation. Seven or more hours of quality sleep supports hormonal balance in ways that affect fat distribution.

Chronic stress drives cortisol production, which is specifically associated with visceral fat accumulation. Stress management is a genuine part of the picture, not just a wellness extra.

A Note on Spot Reduction

You cannot target visceral fat reduction to specific areas through exercise. Doing hundreds of sit-ups does not preferentially reduce abdominal fat. Overall reductions in body fat through sustained lifestyle changes will reduce visceral fat over time.