A scientific study reveals that BMI frequently misclassifies people's weight status, with more than one-third of adults receiving incorrect classifications compared to more accurate body fat measurements.

A study published in Nutrients journal by researchers from University of Modena and Reggio Emilia, University of Verona, and Beirut University found that more than one in three adults (over 35%) are misclassified by BMI when compared to DXA scans, with BMI overestimating underweight, overweight and obesity classifications among 1,351 White European adults aged 18-98.