Visceral Fat: Why It Matters and How to Reduce It
Medically Reviewed by Dr. Pedro Yelamo Vera, MD
Licensed Physician No. 484814280 · Official Medical College of Bizkaia (Spain)Last reviewed: 31 October 2026
Visceral fat sits around your organs and raises heart and diabetes risk. How to measure it at home, waist cut-offs in Spain, UK and US, and what works.
You don't have to figure this out alone
Dr. Pedro Yelamo Vera is an independent, bilingual GP licensed in Spain. Book a 15-minute video consultation in English or Spanish for €50, with a private electronic prescription issued under Spanish law when clinically appropriate.
Visceral fat is the fat stored deep inside your belly, around organs such as the liver and gut. Too much of it raises the risk of high blood pressure, heart disease, type 2 diabetes, stroke and fatty liver, even if your weight looks normal. A tape measure gives a good guide, and steady exercise and weight loss bring it down.
- Visceral fat sits around your organs. It is more harmful than the fat you can pinch under the skin.
- You can carry too much of it with a healthy BMI.
- Simple home check: keep your waist under half your height.
- Waist cut-offs differ: Spain often uses 102 cm for men and 88 cm for women; UK diabetes advice uses 94 cm and 80 cm.
- Sit-ups alone will not shift it. Regular exercise, a plant-rich diet and less alcohol do.
Dr. Pedro Yelamo Vera is a GP licensed in Spain (Colegiado No. 484814280).
For a medical emergency, call 112 or go to the nearest local emergency department. Do not wait for a video consultation or an online reply.
What is visceral fat?
Mayo Clinic describes visceral fat as fat that builds up deep within the belly, in the space around the organs. It is different from the soft fat just under the skin. Some is normal. The problem is having too much.
The British Heart Foundation explains that fat can also build up inside organs. Too much fat in the liver can release extra fat and sugar into the blood.
Why is visceral fat dangerous?
Mayo Clinic links a large amount of belly fat with a higher risk of:
- High blood pressure, heart disease and stroke.
- High blood sugar and type 2 diabetes.
- Fatty liver.
- Sleep apnoea.
- Some cancers.
- Unhealthy levels of fat in the blood, and early death from any cause.
If a blood test has shown high sugar or a fatty liver, see our guides on HbA1c and prediabetes and fatty liver and weight loss.
Can you have visceral fat if you are slim?
Yes. Mayo Clinic notes that a lot of belly fat raises health risks whatever your overall weight. BMI only uses weight and height. It cannot show where the fat sits. That is why doctors also measure the waist. Our guide to BMI, waist size and obesity explains the limits of BMI in more detail.
What causes belly fat to build up?
Mayo Clinic lists several causes:
- Age. Muscle loss with age slows how many calories you burn.
- Menopause. Body fat tends to shift to the belly after menopause, partly because of lower oestrogen.
- Genes. They affect where your body stores fat.
- Alcohol and smoking. Both are linked to more belly fat.
- Too little activity. It speeds up muscle loss.
How do you measure visceral fat at home?
Only a scan can show exactly where fat is stored, and you rarely need one. A tape measure is the practical check.
- Find the bottom of your ribs and the top of your hips.
- Wrap the tape around your waist midway between them. For most people this is just above the belly button.
- Breathe out normally. Do not suck in your stomach.
- Keep the tape level and snug, not tight.
Waist-to-height ratio. Divide your waist by your height, in the same units. NICE, the UK health guidance body, uses these bands for adults with a BMI under 35:
| Waist-to-height ratio | What it means (NICE) |
|---|---|
| 0.4 to 0.49 | Healthy, no raised risk |
| 0.5 to 0.59 | Raised belly fat, higher risk |
| 0.6 or more | High belly fat, further raised risk |
Put simply, keep your waist under half your height. A person 170 cm tall would aim for under 85 cm.
What waist size is too big in Spain, the UK and the US?
Different bodies use different cut-offs, so your Spanish report may not match what you read at home.
| Where | Men | Women |
|---|---|---|
| Spain (Spanish Heart Foundation, obesidad abdominal) | Over 102 cm | Over 88 cm |
| UK (Diabetes UK, raised diabetes risk) | 94 cm or more (90 cm for South Asian men) | 80 cm or more |
| US (Mayo Clinic) | Over 40 in (102 cm) | Over 35 in (89 cm) |
The lower UK figures flag risk earlier. The higher figures mark clear excess belly fat. On a Spanish report, look for perímetro abdominal or perímetro de cintura.
Worried about your waist size, blood sugar or weight?
You can book a video visit with a GP licensed in Spain, in English or Spanish. He looks at your numbers with you, checks which blood tests make sense and helps you plan the next steps.
How do you reduce visceral fat?
The good news: visceral fat responds well to the same steps that lower total body fat.
- Move more. Mayo Clinic advises at least 150 minutes a week of moderate activity, such as brisk walking, or 75 minutes of vigorous activity. Add strength training at least twice a week.
- Try interval training if it suits you. A 2018 review in Sports Medicine found high-intensity interval training lowered visceral fat.
- Eat mostly plants. Choose fruit, vegetables, whole grains and lean protein. Cut down on processed meat and sugary drinks, and watch portion sizes.
- Drink less alcohol, and stop smoking.
Do sit-ups help? They strengthen your stomach muscles. Mayo Clinic is clear that they will not get rid of belly fat on their own.
For some people living with obesity, lifestyle changes are not enough. A doctor may then talk about prescription weight-loss medicines as part of a wider plan. Read how weight-loss medicines work.
When should you see a doctor?
- Your waist is above the cut-offs, or more than half your height.
- You are often thirsty, pee a lot or feel very tired. These can be signs of high blood sugar.
- You have not had your blood pressure, sugar or cholesterol checked for a while.
- You have tried to lose weight and need a plan that fits your health.
Call 112 for chest pain that feels tight or squeezing, chest pain spreading to your arms, neck or jaw, or severe trouble breathing.
Talking it through with a doctor by video
Dr. Yelamo is a GP licensed in Spain. He sees adults, children and pregnant patients by video, every day from 07:30 to 20:30 (Spain time). In the visit he will:
- Go through your waist, weight and height, and any recent blood results.
- Ask about your family history, sleep, alcohol and activity.
- Suggest which checks make sense, such as blood pressure, sugar and cholesterol.
- Agree a realistic plan and tell you if you need an in-person exam.
He does not promise any test or prescription before the visit. Where clinically appropriate, following a genuine evaluation. Treatment and prescriptions are issued solely at the doctor's discretion based on evidence-based clinical guidelines.
A prescription is never guaranteed: it is issued only where clinically appropriate after a genuine evaluation, as a private electronic prescription under Spanish law. This service is for urgent, non-emergency care. In an emergency, call 112.
See how the Urgent Care video visit works. It lasts 15 minutes and costs €50.
This guide is general information. It does not replace a consultation with your doctor.
Frequently asked questions
What is visceral fat?
Fat stored deep inside the belly, around organs such as the liver and gut. Too much of it raises the risk of heart disease, type 2 diabetes and fatty liver.
How do I know if I have too much visceral fat?
Measure your waist. If it is more than half your height, you probably carry extra belly fat. Spain often uses over 102 cm for men and over 88 cm for women.
Can thin people have visceral fat?
Yes. You can have a healthy BMI and still carry too much fat around the belly. That is why a waist check matters.
What is the fastest way to lose visceral fat?
There is no shortcut. Regular aerobic exercise, strength training twice a week, a plant-rich diet and less alcohol all help, and visceral fat responds well to them.
Do sit-ups burn belly fat?
Not on their own. They strengthen your stomach muscles, but belly fat goes down with overall exercise, diet and weight loss.
What waist size is healthy for a woman?
UK diabetes advice uses under 80 cm. Spanish heart advice flags over 88 cm, and US advice over 35 inches. Keeping your waist under half your height works for everyone.
Sources
- Mayo Clinic: Belly fat in men
- Mayo Clinic: Belly fat in women
- NICE NG246: Assessing overweight, obesity and central adiposity
- Diabetes UK: Diabetes risk and waist measurement
- Spanish Heart Foundation: Abdominal obesity and how it is measured (in Spanish)
- British Heart Foundation: Why your waist size matters
Related guides
Medical Citations & Sources
This content is written and reviewed by a licensed physician with reference to the following official health authorities.
