What was the life expectancy of a slave in 1850?

Answer 1

The average life expectancy of west-African slaves in the United States in 1850 was about 30 years which was close to the world average life expectancy. Average life expectancy for the entire United States was about 36 years in 1850 with average life expectancy what southern whites only about 31 years.

The primary causes for low life expectancy in all populations in 1850 was infant mortality do to diseases that are now eleminated (sanitation and vaccination) or easily treatable in Western nations. Sub-Saharan, West Africa and developing nations retain a high Infant Mortality Rate and therefore retain low life expectancy do to traditional lack of sanitation, resistance to medical interventions and overpopulation leading to lack of adequate caloric intake.