Anthropometry
Anthropometry is the measurement of body size and proportions - weight, height, waists, skinfolds and limb circumferences - the simple, portable first line of body composition assessment.
Plain English
Patient-Friendly Explanation
Anthropometry simply means measuring the human body. In weight management it usually means height and weight (which give BMI), waist circumference, hip and neck circumference, calf or mid-arm circumference, and skinfold thickness measured with callipers at set sites. The equipment is cheap and portable, there is no radiation and no scan to wait for, which is why anthropometry is used everywhere from a GP clinic to a national growth survey. The numbers are only as good as the technique: the tape has to sit at the right landmark, stay level and be pulled to the same tension each time, and skinfold readings vary between operators unless the same trained person repeats them. That is why the useful comparison is trend over time rather than one reading in isolation, and why we record waist and weight the same way at every visit. Anthropometry does not show you exactly how much fat or muscle you carry - scans and impedance do that - but it reliably shows whether it is going up, down or holding steady.
Medical
Clinical Definition
Anthropometry is the quantitative measurement of the physical dimensions of the body. Derived indices include BMI, waist circumference, waist-to-height ratio, waist-hip ratio, sagittal abdominal diameter, neck and calf circumference, mid-upper-arm circumference and mid-arm muscle circumference, while skinfold thicknesses (triceps, biceps, subscapular, suprailiac) are entered into population-specific equations (Durnin-Womersley, Jackson-Pollock, Slaughter for children) to estimate body density and fat percentage. Technical error and inter-operator variability are well documented for skinfolds, and BMI loses accuracy at the extremes and across ethnicities, which is why Asian-specific cut-offs (BMI 23 and 27.5 kg/m2) are used in Singapore. Age- and sex-specific percentile charts (WHO, CDC) apply the same measures to paediatric growth and nutritional screening tools such as MUST use them for malnutrition risk. Anthropometric data are also core components of obesity staging and of longitudinal cohort work; their strength is low cost, non-invasiveness and repeatability, their limitation is that they index size rather than tissue-specific composition.
Key Insight
Why It Matters
Anthropometry is how we keep score without a scanner: the same tape, the same landmarks, the same person measuring. A single reading tells you little, but the trend across visits is one of the most useful and honest numbers in your file - and unlike BMI alone, waist circumference and waist-to-height ratio pick up the fat around the organs that actually drives risk.
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.
