The waist-to-height ratio (WHtR) of a person is defined as the person's waist circumference, divided by the person's height. The WHtR is a measure of the distribution of body fat. Higher values of WHtR indicate higher risk of obesity-related cardiovascular diseases; it is correlated with abdominal obesity.
The WHtR should not be confused with the Waist–hip ratio (WHR), which has also been used to measure body fat distribution.
A 2010 study that followed 11,000 subjects for up to eight years concluded that WHtR is a much better measure of the risk of heart attack, stroke or death than the more widely used body mass index. However, a 2011 study that followed 60,000 participants for up to 13 years found that waist-hip ratio was a better predictor of ischaemic heart disease mortality than WHtR.
Conversely, WHtR was not a predictor for new-onset diabetes melitus in at least one study.
A WHtR of over 0.5 is critical and signifies an increased risk; a 2010 systematic review of published studies concluded that "WHtR may be advantageous because it avoids the need for age-, sex- and ethnic-specific boundary values". For people under 40 the critical value is 0.5, for people aged 40-50 the critical value is between 0.5 and 0.6, and for people over 50 the critical values start at 0.6.
|Female Porn Star||0.3800|
|Female College Swimmer||0.4240|
|Male College Swimmer||0.4280|
|Female at increased risk||0.4920|
|General healthy cutoff||0.5000|
|Risk equivalent to BMI of 25||0.5100|
|Males at increased risk||0.5360|
|Risk equivalent to BMI of 30||0.5700|
|Substantial risk increase||0.5820|
- Body adiposity index
- Body volume index
- Body mass index
- Sagittal Abdominal Diameter (SAD)
- Body fat percentage
- Body water
- Allometric law
- Ponderal index
- Rohrer's index
- CM Lee, Huxley RR, Wildman RP, Woodward M (July 2008). "Indices of abdominal obesity are better discriminators of cardiovascular risk factors than BMI: a meta-analysis'". Journal of Clinical Epidemiology 61 (7): 646–653. doi:10.1016/j.jclinepi.2007.08.012. PMID 18359190.
- Schneider et al. (2010). "The predictive value of different measures of obesity for incident cardiovascular events and mortality.". The Journal of Clinical Endocrinology & Metabolism 95 (4): 1777–1785. doi:10.1210/jc.2009-1584. PMID 20130075.
- Mørkedal, Bjørn; Romundstad, Pål R; Vatten, Lars J. (2011). "Informativeness of indices of blood pressure, obesity and serum lipids in relation to ischaemic heart disease mortality: the HUNT-II study". European Journal of Epidemiology 26 (6): 457–461. doi:10.1007/s10654-011-9572-7. ISSN 0393-2990. PMC 3115050. PMID 21461943.
- Ren-Jieh Kuo et al. (2011). "Inability of waist-to-height ratio to predict new onset diabetes mellitus among older adults in Taiwan: A five-year observational cohort study". Archives of Gerontology and Geriatrics 53 (1): e1–e4. doi:10.1016/j.archger.2010.05.005.
- Browning Lucy M. et al. (2010). "A systematic review of waist-to-height ratio as a screening tool for the prediction of cardiovascular disease and diabetes: 0·5 could be a suitable global boundary value.". Nutrition research reviews 23 (02): 247–69. doi:10.1017/S0954422410000144.