Belly fat comes in two distinct types: visceral fat, which wraps around your internal organs deep inside your abdomen, and subcutaneous fat, which sits just under your skin. Visceral fat is the more dangerous of the two because it actively releases inflammatory compounds linked to heart disease, type 2 diabetes, and other metabolic problems. Subcutaneous fat, while still excess weight, is less harmful and even provides some protective padding. Understanding the difference is the first step to knowing what health risks you actually face.
What Is the Difference Between Visceral and Subcutaneous Fat?
The simplest way to tell them apart is by location. Subcutaneous fat is the pinchable fat you can grab with your fingers on your belly, thighs, arms, or hips. It sits between your skin and your abdominal wall. Visceral fat is hidden. It lies deep behind your abdominal muscles, surrounding your liver, pancreas, and intestines.
Visceral fat is not just storage. It acts like an active organ. Research published in the Journal of Clinical Investigation found that visceral fat cells release inflammatory proteins called cytokines. These chemicals travel through your bloodstream and can interfere with how your body processes sugar and responds to insulin. Subcutaneous fat releases fewer of these harmful compounds.
Another key difference is how each type responds to diet and exercise. Visceral fat tends to shrink faster when you eat fewer calories and move more. Subcutaneous fat is more stubborn and often takes longer to lose. This is why people who start exercising often see improvements in blood sugar and cholesterol before they see changes on the scale.
How Do You Know If You Have Visceral Fat?
You cannot see visceral fat. You cannot pinch it. But you can estimate how much you have with a simple tape measure. The CDC reports that a waist circumference of 35 inches or more for women and 40 inches or more for men indicates a higher risk of excess visceral fat. This is not a perfect measure but it is the most practical tool available outside a medical imaging lab.
Waist-to-hip ratio is another useful metric. Measure your waist at the narrowest point and your hips at the widest point. Divide waist by hips. A ratio above 0.85 for women or above 0.90 for men suggests more visceral fat. Studies in the American Journal of Clinical Nutrition have shown this ratio predicts health risks better than BMI alone.
Medical imaging like CT scans or MRIs can measure visceral fat exactly. But these are expensive and rarely needed. For most people, waist measurement is enough to know if they should be concerned.
Why Is Visceral Fat More Dangerous for Your Health?
Visceral fat is not just sitting there. It is chemically active. It releases free fatty acids directly into your portal vein, which carries blood to your liver. This can cause fat buildup in the liver itself, a condition called non-alcoholic fatty liver disease.
It also produces hormones and inflammatory markers that affect your whole body. A study in the journal Diabetes Care found that people with higher visceral fat had a significantly greater risk of developing type 2 diabetes, even when their overall body weight was normal. The inflammation from visceral fat is also linked to high blood pressure, heart disease, and certain cancers.
Subcutaneous fat, while not harmless, does not carry the same metabolic risks. Some research even suggests that subcutaneous fat on the thighs and hips may be protective for heart health. The danger is really about where the fat lives, not just how much you have.
What Causes Visceral Fat to Accumulate?
Genetics play a role. Some people store fat in the abdominal area more easily than others. But lifestyle factors are the main drivers. A diet high in refined carbohydrates and added sugars is strongly linked to visceral fat gain. Sugary drinks are especially problematic because liquid sugar bypasses some of your body’s fullness signals and is quickly converted to fat.
Chronic stress also matters. When you are stressed, your body releases cortisol, a hormone that encourages fat storage in the abdominal area. A study in the journal Psychosomatic Medicine found that women with higher cortisol levels had more visceral fat, even after accounting for other factors.
Lack of sleep is another contributor. Research in the journal Sleep found that people who slept fewer than five hours per night gained more visceral fat over five years compared to those who slept seven to eight hours. Poor sleep disrupts hormones that regulate appetite and fat storage.
Can You Target Visceral Fat With Specific Exercises?
You cannot spot-reduce visceral fat. Doing sit-ups or crunches will not specifically burn fat around your organs. Fat loss happens from the whole body, not from one area. However, some types of exercise reduce visceral fat more effectively than others.
High-intensity interval training (HIIT) appears to be particularly effective. A study in the journal Medicine & Science in Sports & Exercise compared HIIT to steady-state cardio and found that HIIT reduced visceral fat significantly more in the same amount of exercise time. The intense bursts of effort followed by short rest seem to trigger greater metabolic changes.
Strength training also helps. Building muscle increases your resting metabolic rate, meaning you burn more calories even when sitting still. A study in the journal Obesity showed that combining resistance training with aerobic exercise was more effective for reducing visceral fat than either type alone.
Consistency matters more than intensity. Thirty minutes of brisk walking five days a week will reduce visceral fat over time. The key is doing something regularly rather than occasional intense workouts.
| Factor | Visceral Fat | Subcutaneous Fat |
|---|---|---|
| Location | Deep around internal organs | Just under the skin |
| Can you feel it? | No | Yes, pinchable |
| Health risk | High, linked to disease | Lower, mostly cosmetic |
| How to measure | Waist circumference | Caliper or scale |
| Response to diet | Fast to shrink | Slower to shrink |
| Hormonal activity | High, releases inflammatory compounds | Low |
What Does Research on What Is Belly Fat Called Visceral Vs Subcutaneous Show?
Research consistently shows that visceral fat is the more dangerous type of belly fat. A large study published in the New England Journal of Medicine followed over 15,000 people and found that those with higher waist-to-hip ratios had a significantly greater risk of heart attack, even when their BMI was in the normal range. This suggests that where you carry your weight matters more than how much you weigh.
Another study in the journal Radiology used MRI scans to measure visceral fat directly. Researchers found that people with high visceral fat had worse blood sugar control, higher triglycerides, and lower HDL cholesterol compared to people with similar amounts of subcutaneous fat. The differences were not small. They were clinically meaningful.
Some people report that losing visceral fat improves their energy levels and reduces joint pain. These claims are not well studied in large trials, so they remain anecdotal. But they make biological sense. Less inflammation in the body would logically lead to feeling better overall.
Frequently Asked Questions
Can you have visceral fat if you are thin?
Yes. This is called normal-weight obesity. A person can have a healthy BMI but still carry dangerous levels of visceral fat around their organs.
How fast can you lose visceral fat?
With consistent diet and exercise, noticeable reductions in visceral fat can happen within two to three months. It often shrinks faster than subcutaneous fat.
Does drinking water help reduce visceral fat?
Water itself does not burn fat. But replacing sugary drinks with water reduces calorie intake and helps with overall fat loss, including visceral fat.
Are there medications for visceral fat?
No medication specifically targets visceral fat. Some diabetes drugs like metformin may help reduce it as a side effect, but they are not prescribed for fat loss alone.
