I remember reading a long time ago that the body mass index was a calculation that did not really serve to estimate body fat or overweight.
In that sense, a friend told me that if an index was wanted with only a couple of body measures, it was better to work with the waist-reef index, for the calculation of risk.
But in all cases, body fat estimates and adequate weight for health are things that should be done by professionals, and with something better than a simple index.
After all, the Quetelet index was to calculate the ‘corpulence’, understanding it as the projection in a plane of the volume of a three-dimensional body. Unless that's what I remember.
Thanks for your message. You see right. Using a waist to height ratio has been found to be a lot more useful than the BMI in estimating metabolic health.