BMI ‘not a good measure of obesity’
In a retrospective study they compared the BMI status, leptin levels and body fat percentages of 1393 adult patients.
When BMI was used to measure obesity, 26% of the patients fit that description. However, when a dual-energy x-ray absorptiometry (DXA) scan was used to measure body fat percentages, the number jumped to 64%.
The study also found that 39% of the participants who were not obese according to their BMI were classified as obese by the DXA scan.
That result was much more likely among women, occurring in 48% of the females, the researchers found.
A quarter of men whose BMI classified them as obese were non-obese on the body fat measure.
Meanwhile, leptin levels were strongly correlated to body fat, leading the authors to recommend leptin testing alongside BMI to get a more accurate diagnosis. But Australian experts were dismissive of the advice.
“We have a lot of evidence about the relationship