The 2014 book The Long Shadow draws insights plucked from three decades spent diligently 
tracking nearly 800 Baltimore inner-city kids, from first grade to age 
28 or 29. The  researchers found that
 the resources and strength of a child’s family tended to exert a 
powerful influence over a child’s future. Poor kids tended to become 
poor adults, with surprisingly few kids jumping up or down the 
socioeconomic ladder in Baltimore. Mostly, kids grew up only to arrive 
where they started.
The finding has major implications for health, too, since ample research has long shown that income and education levels – one’s socioeconomic status – are strongly linked to all sorts of health measures, including disease susceptibility and lifespan. The entrenched poverty and lack of social mobility that researchers found in Baltimore raises questions about the prospects for success of the battle to reduce class- and race-based health disparities.
The finding has major implications for health, too, since ample research has long shown that income and education levels – one’s socioeconomic status – are strongly linked to all sorts of health measures, including disease susceptibility and lifespan. The entrenched poverty and lack of social mobility that researchers found in Baltimore raises questions about the prospects for success of the battle to reduce class- and race-based health disparities.
 
