PREVALENCE OF THE RECENTLY PROPOSED CLINICAL OBESITY AMONG OLDER ADULTS - Health and Retirement Study (HRS)

Sep 29, 2026

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Examining obesity identification in older adults, this study contrasts the conventional BMI≥30 kg/m² definition with the Lancet Diabetes and Endocrinology Commission’s newer clinical definition. Using a nationally representative Health and Retirement Study sample (≥50 years; waves 13–14; n=13,852), obesity prevalence is 45.9% under BMI alone versus 40.4% under NewDef. Reclassification shows differing distributions by waist circumference and obesity-related chronic conditions, with NewDef reducing counted cases by 754. Findings suggest improved risk targeting, while limited documentation of obesity-related chronic conditions constrains accuracy and underscores the need for better clinical data.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages2

Reading Time5 min

AccessFree to download

Abstract

Obesity definitions compared

Study sample and methods

Prevalence results and reclassification patterns

Implications and limitations

FAQs

How do CurDef and NewDef define obesity in older adults?

CurDef labels obesity using BMI≥30 kg/m². NewDef classifies individuals as “clinical obese” only when BMI≥30 is accompanied by high adiposity measured by waist circumference and an obesity-related chronic condition.

What is the difference in obesity prevalence between CurDef and NewDef?

In the HRS sample, prevalence is 45.9% using CurDef and 40.4% using NewDef, corresponding to a reduction of 754 individuals reclassified as non-obese.

Why does the NewDef approach lower prevalence, and what limitation affects accuracy?

NewDef requires both high BMI and high waist circumference plus an obesity-related chronic condition, so some individuals meeting BMI criteria lack the required condition documentation. The lack of detailed information on whether chronic conditions are obesity-related limits accuracy, indicating a need for improved health condition reporting.

Sep 29, 2026

Upload by Kurz