Waist to Height Ratio and Obesity-Related Risk

Byron's Comments:

A simple measurement to guage the risk of obesity. Your waist should be less than 1/2 your height.

Study Title:

Waist-to-height ratio: a simple option for determining excess central adiposity in young people.

Study Abstract:

Waist circumference is recommended as a means of identifying people at risk of morbidity associated with central adiposity. Yet, there are no universally agreed cut-points to determine when a waist circumference is too large in young people. In this study we examined the relation between sex- and age-specific waist circumference cut-points, the waist-to-height ratio (WHtR) cut-point of <0.5 and cardiovascular disease (CVD) risk clustering in 164 young people, mean age 14.90.2 years (means.d.). In total 19 (11.6% ) of the sample were identified as having CVD risk clustering. These young people were significantly (P<0.001) heavier and had higher body mass index (BMI) and waist circumference z-scores compared to those without CVD risk clustering. The WHtR cut-point of 0.5 estimated CVD risk clustering to a similar extent to sex- and age-adjusted cut-points for waist circumference and BMI. Young people with excess central adiposity (WHtR0.5) were 11 times (OR 11.4, P<0.001), more likely to have CVD risk clustering compared to those who did not have excess central adiposity. The WHtR has several advantages; it is easy to calculate, does not require sex- and age-specific centiles and as has been previously suggested, it is a simple message, easily understood by clinicians and families, to ‘keep your waist circumference to less than half your height’.

Study Information:

S P Garnett, L A Baur, and C T Cowell Waist-to-height ratio: a simple option for determining excess central adiposity in young people. International Journal of Obesity  2008 April  32, 1028–1030.
Institute of Endocrinology and Diabetes, The Children's Hospital at Westmead, Westmead, New South Wales, Australia

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