Poor health means poor work productivity. Short life expectancy means less experience accumulated within organizations, and as a consequence, low productivity.
If you correlate investment in education with life expectancy, the return on investment is diminished by reduced active life because of morbidity.
A healthy population is very likely to be more productive, obtain a higher income, thus generate consumption growth. Both because of productivity and consumption a healthy population should generate a better return on all investments, so they will attract more investment, generate more taxation. Because of productivity and investments net exports are influenced towards a better value. Because of increased taxation income you have more money for government spending. Add all this and you obtain increased GDP, meaning economic growth is correlated with healthcare.
Test this hypothesis, using health-care spending/capita time-series with GDP/capita.
Poor health affects productivity of the citizens whereby many employees are on sick leave instead of being at work and subsequent to that they either are medically boarded or they take early retirement voluntarily leaving a vacuum in knowledge and experience.
@ Renzo Bianchi. Yes. Because the market fails to redistribute welfare in disadvantaged communities. So market failures contribute to low health. not vice versa.
We have to understand first what are called market failure or market system (mechanism) failure. The market mechanism requires many assumptions that must be fulfilled. If the assumption they will not be met, then there was a market failure
Poor health means low productivity link it with life expectancy and population rate. Also low productivity influences the level of income and MPC thus affects the GDP.
Health-financing Reforms in Southeast Asia: Challenges in Achieving Universal Coverage ", you can also read my paper " Health Care Expenditure and Economic Growth in SAARC countries (1995-2012): A panel causality"
Ill-health results in unemployment and unemployment leads to poverty.This must be double agony, poor health in developing nation. Poverty is most derogatory and dehumanising ill-health that befalls anyone. It destroys all levels of human life and to prevent the hardships poverty inflicts on humans, the victims must die prematurely. Where there is survival in the developing country, it compares to reprimanding with cruelty (WHO, 1995).
World Health Organisation, (1995) The World Health Report 1995: Bridging the Gaps, Geneva: WHO. Available at: : http://www.who.int/en , (accessed: 13/07/18)