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How fat is obese?
A De Lorenzo1, P Deurenberg, M Pietrantuono
1Division of Human Nutrition, University of Tor Vergata, Via Montpellier 1, I-00133, Rome, Italy. delorenzo@uniroma2.it
Acta Diabetologica
|November 18, 2003
Summary
Body Mass Index (BMI) alone misclassifies obesity in many individuals. Body fat percentage (BF%) offers a more accurate assessment, highlighting the need for improved obesity diagnostic criteria in clinical practice.
Area of Science:
- Clinical Medicine
- Human Physiology
- Public Health
Background:
- Obesity is a significant global health concern.
- Body Mass Index (BMI) is a widely used metric for obesity assessment.
- Limitations of BMI in accurately reflecting body composition are increasingly recognized.
Purpose of the Study:
- To compare the accuracy of body fat measurements against Body Mass Index (BMI) for obesity classification.
- To evaluate the prevalence of misclassification of obesity using BMI alone in a diverse adult population.
Main Methods:
- Analysis of data from 890 adult subjects (596 females, 294 males).
- Inclusion of participants aged 18-83 years.
- Data collected included Body Mass Index (BMI) ranging from 14 to 54 kg/m(2) and body fat percentage (BF%) from 4% to 57%.
Main Results:
- A substantial number of both male and female participants were misclassified as non-obese based on BMI alone.
- Body fat percentage (BF%) revealed a higher prevalence of obesity than BMI in the study cohort.
- Discrepancies highlight the inadequacy of BMI as a sole diagnostic tool for obesity.
Conclusions:
- BMI alone is insufficient for accurate obesity diagnosis in clinical practice.
- Body fat percentage (BF%) provides a more reliable measure for identifying obesity.
- Revised diagnostic criteria incorporating body composition are recommended for obesity assessment.