Its not intelligence its economy.  A smart person in an economically deprived situation (born into abject poverty) can't make healthy decisions - but that certainly does not preclude that person from being intelligent or from living a long life.  Theyve certainly proven basic nutrition helps kids pay attention in class - but intelligent people living longer because of intelligent decisions is nonsense (even in the west).   Einstein was non verbal until age four - and he couldnt tie his shoes - I doubt his diet and exercise were anymore intelligent ;)  We were born with only so many heartbeats - no matter how smart you are you can't change that.