The study determined the correlation between health sector expenditure and economic development in Nigeria. The study adopted ex-post-factor research design. The population of this study was the entire Nigerian economy where the properties of data used for this research were extracted covering 1981 to 2022. Using judgmental sampling technique, a sample of 42years’ period from 1981 to 2022 were used. Time series secondary data obtained basically from the CBN bulletin and world demographic in...