Does waist-to-height ratio predict heart disease and death?

Yes. In large studies following people over time, a higher waist-to-height ratio was linked to more heart disease and earlier death. It is a useful warning sign, not a forecast for any one person.

Who it's for

Adults wanting a simple check of belly fat; not tested in children here.

What to expect

Each step up in ratio goes with modestly higher risk.

Watch out for

These studies show links, and results varied widely between studies.

What the studies show

• A review that pooled 20 studies of the general population found that people with the highest ratio had a 23% higher relative riskrelative risk How much more or less likely something is in one group than another, as a ratio. A big relative change can still be a small change for any one person. of death from any cause than people with the lowest. Their relative risk of death from heart disease was 39% higher1Meta-analysis · 2023Waist to height ratio as a simple tool for predicting mortality: a systematic review and meta-analysis.Higher levels of WHtR, indicating central obesity, were associated with an increased hazard of CVD and all-cause mortality. This measure can be used in the clinical setting as a simple tool for predicting mortality.Int J Obes (Lond). These figures compare groups, so the gain for one person depends on how high their risk was to begin with.
• A review of 72 studies with about 2.5 million adults found that each 0.1 rise in ratio went with a 24% higher relative risk of death from any cause. The link held after accounting for body mass index (BMI). The studies differed a lot from one another, and the risk curve was nearly J-shaped2Meta-analysis · 2020 · 297 peopleCentral fatness and risk of all cause mortality: systematic review and dose-response meta-analysis of 72 prospective cohort studies.Indices of central fatness including waist circumference, waist-to-hip ratio, waist-to-height ratio, waist-to-thigh ratio, body adiposity index, and A body shape index, independent of overall adiposity, were positively and significantly associated with a higher all cause mortality risk. Larger hip circumference and…BMJ.
• A study that followed 468,333 UK adults for 12 years found that each 5% rise in ratio was linked to about 23% higher relative risk of heart attack or stroke from blockages. This held regardless of body fat percentage9Observational study · 2024 · 468,333 peopleWaist-to-height ratio and body fat percentage as risk factors for ischemic cardiovascular disease: a prospective cohort study from UK Biobank.WHtR, when used as a proxy measure for central obesity, is linearly associated with ischemic CVD in both sexes, which is independent of BF%. In contrast, the relationship of BF% with these health outcomes is predominantly driven by its correlation with WHtR.Am J Clin Nutr.
• In 6,814 US adults aged 45 to 85 followed for 10 years, each step up in ratio was linked to 21% higher relative risk of serious coronary heart disease events. BMI showed no clear link, and chance could explain it8Observational study · 2026 · 6,814 peopleExamining the relationship between anthropometric and body composition measures with coronary heart disease events: the multi-ethnic study of atherosclerosis.Higher FM, waist-to-height ratio, and waist circumference were associated with increased risk for hard CHD events while higher FFM was associated with decreased risk. This highlights the potential importance of lifestyle interventions to build muscle and minimize adiposity for the prevention of CVD and strengthens the…Eur J Prev Cardiol.
• A review of 78 studies found ratio and waist size predicted diabetes and heart disease more often than BMI. A cutoff of 0.5 (waist under half your height) worked across countries3Systematic review · 2010A 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.To make firmer statistical comparison, a meta-analysis is required. The AUROC analyses indicate that WHtR may be a more useful global clinical screening tool than WC, with a weighted mean boundary value of 0·5, supporting the simple public health message 'keep your waist circumference to less than half your height'.Nutr Res Rev. A pooled analysis of 34 studies found the ratio was never worse than BMI, but results varied widely4Meta-analysis · 2013 · 512,809 peoplePredicting cardiometabolic risk: waist-to-height ratio or BMI. A meta-analysis.The results of this meta-analysis support the use of WHtR in identifying adults at increased cardiometabolic risk. However, further evidence is warranted because of a substantial heterogeneity between the studies.Diabetes Metab Syndr Obes.
• In studies of about 16,000 men and 32,700 women (average age 61), the ratio had the strongest link to heart disease. Differences from BMI were small and probably not meaningful in practice5Randomized trial · 2008 · 32,700 peopleMeasures of obesity and cardiovascular risk among men and women.The WHtR demonstrated statistically the best model fit and strongest associations with CVD. However, compared with body mass index, differences in cardiovascular risk assessment using other indexes were small and likely not clinically consequential. Our findings emphasize that higher levels of adiposity, however…J Am Coll Cardiol.

Key studies

What guidelines say

No official guideline in the evidence addresses this question.

What we don't know

• Whether using the ratio to guide care improves outcomes. These studies show prediction, not benefit from acting on it.
• Why results differ so much between studies, and how well one cutoff works for every group.