From this study (Ashwell M, Mayhew L, Richardson J, Rickayzen B (2014) Waist-to-Height Ratio Is More Predictive of Years of Life Lost than Body Mass Index. PLoS ONE 9(9): e103483. https://doi.org/10.1371/journal.pone.0103483):
Mortality risk associated with BMI in the British HALS survey was similar to that found in US studies. However, Waist to Height Ratio (WHtR) was a better predictor of mortality risk. For the first time, Years of Life Lost (YLL) have been quantified for different values of WHtR. This has been done for both sexes separately and for three representative ages.