Overweight in children is a growing concern in developing countries, but the standard method to diagnose it—calculating BMI (body mass index)—requires scales, height-measuring equipment, and trained personnel. A team from Nepal wanted to test whether a simpler measurement—neck circumference—could reliably identify overweight children instead.
They measured 300 apparently healthy children aged 6–11 years in Bharatpur, Nepal, recording their height, weight, neck size, waist size, and hip size. They then compared these measurements against WHO growth standards to see which children were overweight.
Neck circumference was strongly linked to overweight status
The study found that neck circumference correlated strongly with weight, height, BMI, waist circumference, and hip circumference. Importantly, there was a statistically significant connection between neck size and whether a child was classified as overweight by standard BMI measures (p < 0.001). This suggests neck measurement could work as a screening tool.
Different cutoff values for boys and girls
Using statistical analysis, the researchers identified specific neck sizes that best predicted overweight. For boys, a neck circumference of 27.75 cm or larger correctly identified overweight children 89% of the time. For girls, 26.75 cm or larger caught 100% of overweight cases. Using one combined cutoff of 27.25 cm for all children worked reasonably well too, correctly identifying overweight in about 81% of cases.
One limitation: this study was conducted only in Nepal with 300 children, so these exact numbers may not apply directly to Singapore's diverse population. The findings show correlation, not proof of cause-and-effect.
Why a neck measurement matters
Neck circumference is quick to measure with just a soft tape and requires no special training—making it practical for schools, clinics, or community health workers in any setting. This could help identify children who need further evaluation or lifestyle support, especially where resources for full BMI screening are limited.