A recent study in the International Journal of Epidemiology puts forward the proposal that: The association between intelligence and lifespan is mostly genetic
We are looking forward to more research in this area even though we are quick to be suspect of findings when genetics are put forward as the main or sole feature that accounts for the differences found. Nonetheless, this is an interesting study. They summarized their finding in plain language:
It has been reported that brighter people live longer; we asked ‘why?’.
We found, using data from three studies, that the small association between being brighter and living longer was mostly genetic in origin.
This is a key finding in cognitive epidemiology; it is a further indication that intelligence is not just ‘school-smarts’.