Scientists say BMI gets it wrong for over one third of adults

New research from Italy suggests that the widely used body mass index (BMI) system may be misclassifying many people. The findings, which will be presented at the European Congress on Obesity (ECO 2026, Istanbul, Turkey, May 12-15) and published in Nutrients, show that when body fat is measured using dual-energy X-ray absorptiometry (DXA), considered the gold standard method, BMI often incorrectly labels individuals as overweight or obese.

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