In this short video Professor Hans Rosling shows that people live longer in countries with a high GDP per capita. No high income countries have short life expectancy, and no low income countries have long life expectancy. Still, there is a huge difference in life expectancy between countries on the same income level, depending on how the money is distributed and how it is used.
— Income data: World Bank’s GDP per capita, PPP (constant 2011 international $), Jan 14 2015.
— Life expectancy: IHME 2014. Available from http://vizhub.healthdata.org/le/. Jan 14 2015
— Population: UN World Population Prospects: The 2012 Revision.