Body fat percentage, which can be measured at most gyms, is a more relevant metric than the BMI for muscular people (e.g. those of us who work out). Yet, the medical establishment cannot be bothered to use this metric at all. Obesity, where it really is fat, will kill you at an earlier age. Muscularity, assuming it is natural (e.g. no performance enhancing compounds), is likely to extend your healthy life span. That the medical weenies cannot be bothered to differentiate between these two makes clear they really do not know much about physiology. It also tells you about the nature of bureaucracy as well.