biostudies-literatureUnknown38(1)Song A<h4>Background</h4>Frailty is a critical geriatric syndrome associated with adverse health outcomes and exhibits a complex relationship with obesity. Traditional anthropometrics, such as body mass index (BMI), inadequately assess obesity-related risks in the aging population. Emerging indices better capture visceral adiposity, potentially enhancing frailty prediction. This study evaluates these indices' associations with frailty in older adults.<h4>Methods</h4>This study analyzed existing data collected between 2002 and 2007 as part of the National Health and Nutrition Examination Survey (NHANES). BMI, body roundness index (BRI), a body shape index (ABSI), waist-to-height ratio (WHtR), and waist/height0.5 (WHT·5R) were calculated using waist circumference, weight, and height. We used a modAging clinical and experimental research37https://www.ebi.ac.uk/biostudies/studies/S-EPMC12775087biostudies-literatureComparison of novel and traditional anthropometric indices: which is the best indicator of frailty in older adults?PMC12775087Huang TYu SSong AShi JfalseComparison of novel and traditional anthropometric indices: which is the best indicator of frailty in older adults?<h4>Background</h4>Frailty is a critical geriatric syndrome associated with adverse health outcomes and exhibits a complex relationship with obesity. Traditional anthropometrics, such as body mass index (BMI), inadequately assess obesity-related risks in the aging population. Emerging indices better capture visceral adiposity, potentially enhancing frailty prediction. This study evaluates these indices' associations with frailty in older adults.<h4>Methods</h4>This study analyzed existing data collected between 2002 and 2007 as part of the National Health and Nutrition Examination Survey (NHANES). BMI, body roundness index (BRI), a body shape index (ABSI), waist-to-height ratio (WHtR), and waist/height0.5 (WHT·5R) were calculated using waist circumference, weight, and height. We used a mod2025-01-01T00:00:00Z2025 Dec2026-06-06T11:33:17.994Z2026-05-29T03:12:59.987ZS-EPMC127750874143285910.1007/s40520-025-03293-0