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Posted on Wednesday February 25, 2026 in VAT-TRAP
An article written by Dr Edward Leatham, Consultant Cardiologist © 2025 E.Leatham
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Measuring your waist sounds easy — until you try to do it properly.
In modern heart and metabolic medicine, waist circumference is one of the most useful simple health measurements we have. It tells us far more about future risk than weight or BMI alone.
But this only works if the waist is measured in the right place.
This article explains:
Your waist size reflects the amount of visceral fat — the deep fat stored around the liver and other organs.
High visceral fat is linked to:
This is why organisations such as the World Health Organization and UK health bodies recommend waist measurement as part of routine health assessment.
In everyday language, waist usually means:
That makes sense for fashion — but not for health.
In medicine, waist circumference is not about shape.
It is a marker of internal abdominal fat and health risk.
These two meanings share the same word — but they are measuring very different things.
Visceral fat sits below the rib cage, pushing the abdomen outwards.
The narrowest point is often above this area.
So visceral fat — and health risk — can increase while the “waist” measurement stays the same.
As your body changes:
This makes it unreliable for tracking real health change.
This means narrowest-point measurements are not comparable between people.
A widely used health rule is:
Keep your waist less than half your height
This only works if the waist is measured at a fixed anatomical level.
Measuring the narrowest point makes risk appear lower than it really is.
Health organisations deliberately define waist circumference using anatomical landmarks, not appearance.
UK guidance (including NHS-endorsed advice) increasingly supports waist-to-height ratio, provided waist is measured correctly.
The goal is consistency and risk prediction — not aesthetics.
Stand upright and relaxed. Do not suck your stomach in.
Use this exact point every time.
Do not:
Patients often notice:
Helpful tips:
Consistency matters more than perfection.
Your waist should be less than half your height
Examples:
These thresholds only make sense if waist is measured correctly.
The issue is not effort — it’s language.
Measuring the narrowest point:
If your goal is health, prevention, and tracking real change, the narrowest point is the wrong place.
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