BMI misclassifies obesity in millions: study of 844,000 finds 8.6% false negatives

A large study of 844,000 people published in Nature shows BMI fails to identify obesity in up to 8.6% of individuals and misattributes it in up to 3.1%. This challenges the reliability of BMI as a diagnostic tool, potentially impacting clinical practice and public health metrics. The findings are based on a peer-reviewed study, but the exact methodology and population details are not fully specified in the source.

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