BMI doesn't work so well with the very tall and very short. It tends to list tall people higher than it should, and short people lower. https://people.maths.ox.ac.uk/trefethen/bmi.html I think he has gained human status, and here is why: If he is 6'7 and 225 we get the following results: The standard BMI yields 25.3 barely overweight.  The newer BMI yields 23.26 which I believe is more accurate. https://people.maths.ox.ac.uk/trefethen/bmi_calc.html