Story perspectives

New Study: 70% of U.S. Adults Now Classified Obese

10/22/2025

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Summary

Story summary

A Mass General Brigham study finds nearly 70% of US adults would be classified as obese under updated definitions that include body fat distribution instead of BMI.
The prevalence rises from 42.9% to 68.6% among more than 300,000 participants.
The reclassification is linked to higher risks of diabetes, cardiovascular disease, and mortality among the newly labeled.
The criteria are endorsed by 76 organizations and emphasize body composition over weight alone.

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Story summary

A Mass General Brigham study finds nearly 70% of US adults would be classified as obese under updated definitions that include body fat distribution instead of BMI.
The prevalence rises from 42.9% to 68.6% among more than 300,000 participants.
The reclassification is linked to higher risks of diabetes, cardiovascular disease, and mortality among the newly labeled.
The criteria are endorsed by 76 organizations and emphasize body composition over weight alone.