If it weren't for ALPA and the cheap airline companies, BMI would be a big deal, as it should be.
When I was 37 years old I weighed 173lbs and was 5'8" tall, according to the BMI table I am 'overweight'. Spoke to two respected AMEs who said far from overweight I should consider eating a bit more as there was not an ounce of fat on me - their opinion of the BMI scale was that it was fatally flawed, having come from Japan and Asian body build is totally different to Caucasian build so for the tables to have any relevance at all they would need to be carefully factored. I wonder if this has ever been done?