Almost 70% of US Adults Would Be Deemed Obese Based on New Definition, Study Finds (theguardian.com)
(Thursday October 16, 2025 @03:00AM (msmash)
from the how-about-that dept.)
Almost 70% of adults in the US would be [1]deemed to have obesity based on a new definition, research suggests. From a report:
> The traditional definition of obesity, typically based on having a body mass index (BMI) of 30 or greater, has long been contentious, not least as it does not differentiate between fat and muscle.
>
> In an effort to tackle the issue, in January medical experts from around the world called for a new definition to be adopted. This would encompass people either with a BMI greater than 40; or those with a high BMI and at least one raised figure for measures such as waist circumference, waist-to-hip ratio, or waist-to-height ratio; or those with two such raised figures regardless of BMI; or those with direct measures of excess body fat based on scans.
>
> In addition, they said obesity should be split into two categories: clinical obesity -- where there are signs of illness -- and pre-clinical obesity, where there are not. Now research suggests the revamped definition could result in a dramatic rise in the prevalence of obesity among adults in the US.
[1] https://www.theguardian.com/society/2025/oct/15/almost-70-of-us-adults-would-be-deemed-obese-based-on-new-definition-study-finds
> The traditional definition of obesity, typically based on having a body mass index (BMI) of 30 or greater, has long been contentious, not least as it does not differentiate between fat and muscle.
>
> In an effort to tackle the issue, in January medical experts from around the world called for a new definition to be adopted. This would encompass people either with a BMI greater than 40; or those with a high BMI and at least one raised figure for measures such as waist circumference, waist-to-hip ratio, or waist-to-height ratio; or those with two such raised figures regardless of BMI; or those with direct measures of excess body fat based on scans.
>
> In addition, they said obesity should be split into two categories: clinical obesity -- where there are signs of illness -- and pre-clinical obesity, where there are not. Now research suggests the revamped definition could result in a dramatic rise in the prevalence of obesity among adults in the US.
[1] https://www.theguardian.com/society/2025/oct/15/almost-70-of-us-adults-would-be-deemed-obese-based-on-new-definition-study-finds