Brain size, body size and longevity

In this analysis, we bring together two research fields that have never been associated before: the clinical issue 'Quetelet's body-mass index and longevity' and the comparative biological issue 'body-brain allometry'. Comparison of medical and biological data supports the view that body mass index is just a one-to-one mapping of the body-brain-energy balance-a biological variable indicating that an individual maintains its systemic energy homeostasis and therefore is likely to perform well in the coming years. International Journal of Obesity (2010) 34, 1349-1352; doi: 10.1038/ijo.2010.65; published online 30 March 2010