Arterial Stiffness
Arterial stiffness measures how rigid the large arteries have become - rising stiffness with obesity signals a higher risk of heart attack, stroke and kidney damage, and it is measured with a simple, painless pulse test.
Plain English
Patient-Friendly Explanation
A healthy aorta and its main branches are elastic: they stretch as the heart pumps and spring back between beats, which smooths the pulse and takes load off the heart. Extra weight, high blood pressure, high blood sugar, inflammation and smoking stiffen those walls, and blood then hits the brain, heart and kidneys at a higher pressure with every beat. Measuring how fast the pulse wave travels between two points - the carotid artery in the neck and the femoral artery in the groin - gives a number, and the stiffer the arteries, the faster the wave. It is quick, painless, radiation-free and done with sensors and a cuff, and the same test can be repeated after treatment to show improvement. Stiffness responds to weight loss, regular aerobic exercise, less salt, better blood pressure and blood sugar control, and some blood pressure medicines lower it more than others.
Medical
Clinical Definition
Arterial stiffness is quantified most commonly by carotid-femoral pulse wave velocity (cfPWV), the reference-standard non-invasive measure of central arterial stiffness, with augmentation index, central pulse pressure and ambulatory arterial stiffness index as secondary indices; a cfPWV above 10 m/s is recognised by European hypertension guidelines as evidence of target-organ damage. Obesity raises cfPWV through sympathetic nervous system activation, renin-angiotensin-aldosterone system activity, adipokine- and cytokine-mediated vascular inflammation, elastin fragmentation, collagen and advanced glycation end-product deposition and impaired endothelial nitric oxide availability; visceral fat and insulin resistance amplify each pathway. cfPWV independently predicts cardiovascular events, all-cause mortality and decline in renal function, and adds prognostic information beyond conventional risk factors, which is why it is used in specialist risk assessment. Interventions that lower cfPWV include weight reduction, aerobic exercise, sodium restriction, glycaemic control and antihypertensive therapy - with ACE inhibitors and angiotensin receptor blockers showing favourable effects on central pressure and stiffness.
Key Insight
Why It Matters
Arterial stiffness is the bloodstream's version of a blood-pressure reading taken one step deeper: it shows strain on the heart and kidneys before any symptom appears, and unlike your age it can move in the right direction. If your blood pressure or waist is up, this test tells us how much the vessels have already felt it and gives us a number to track while you lose weight.
Sources
Reviewed against standard medical references.
Medically reviewed by
Family Physician & Registered Acupuncturist, Accord Medical Clinic. MBBS (NUS), Graduate Diploma in Family Medicine (NUS), Graduate Diploma in Acupuncture (Singapore College of TCM).
Last reviewed: September 2026
This page is general health education, not medical advice. Whether any treatment is appropriate for you is a decision made in consultation after assessment.
