It doesn't help that BMI is still used even though it is such a crude measure as to be useless. Stuff like body fat% measurements and waist measurements are more direct indicators of losing fat.
We use PI/CI (Ponderal Index AKA Corpulence Index) in my lab and it's a huge improvement over BMI. Especially for modern heights in men and women. Still crude, but easy to apply. Wide margins.
