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The role of health in the development of a nation cannot be overemphasized. While the concept of health status and the impact of public health expenditure have continued to generate scholarly debates, this study contributes to the debate with the incorporation of the role of the environment as a determinant of health status in Nigeria. With the objective of examining the impact of Public Health Expenditures and Pollution on Nigerians Health Status, annual secondary time series data spanning 37 years (1981-2017) collected from Central Bank of Nigeria statistical bulletin and World Development Indicator were analyzed using the ARDL technique. The result shows that Public Expenditures on Health has a positive and significant impact on health outcomes in Nigeria. Again, environmental pollution as proxied by per capita CO2 emission has a negative and significant effect on health outcome in the country. Economic growth rate was found to have positive impact but insignificant in enhancing life expectancy (proxy for health outcome) in Nigeria. On the basis of the empirical findings, it is recommended that the government should sustain the flow of resources to the health sector and improve on environmental practices through the formulation of new national environmental policies and better awareness campaign through the deployment of community health extension workers (CHEW).

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The purpose of this article is to investigate the nexus between domestic investment, export expansion and economic growth in Nigeria. To achieve this purpose, annual time series data from the period between 1981 and 2018 was tested using the Johansen co-integration analysis, VECM and the Granger-Causality test. The result of the analysis revealed an insignificant relationship between domestic investment and export expansion. Based on the Granger-Causality test, the result indicated a bi-directional relationship between domestic investment and economic growth. These results provide evidence that domestic investment and economic growth are not viewed as sources of export expansion in Nigeria during the period under review. Therefore, changes in policies and regulations to accelerate the export expansion of Nigeria will ultimately yield positive results in terms of achieving high rates of stable economic growth. Policymakers in Nigeria should search for the alternative catalyst to stimulate domestic investment and economic growth geared towards promoting long-term export expansion in Nigeria effectively.