BMI/IMC: a new and more accurate calculation from Oxford University

1.3*weight(kg)/height(m)^2.5 


http://people.maths.ox.ac.uk/trefethen/bmi_calc.html

http://people.maths.ox.ac.uk/trefethen/bmi.html

http://www.ox.ac.uk/media/science_blog/130116.html