This study reviews the impact of public investment on health population in BRICS countries. It examines the effects of foreign direct investment (FDI) and economic policy uncertainty on health outcomes, focusing on how these factors influence population health in BRICS nations. The paper analyzes the role of public investment in improving health outcomes, considering both the positive and negative impacts of FDI on economic growth and health. It highlights the importance of public investment in enhancing health outcomes, particularly in the context of BRICS countries. The study also discusses the relationship between FDI and health outcomes, noting that while FDI can contribute to economic growth and improve health outcomes, it may also have negative effects on health in underdeveloped nations. The paper reviews existing literature on the topic, identifying gaps in research and suggesting areas for further investigation. It concludes that public investment plays a crucial role in improving health outcomes, and that further research is needed to fully understand the relationship between FDI, public investment, and health outcomes in BRICS countries. The study also emphasizes the need for more research on the impact of FDI on health outcomes, particularly in developing countries. The paper provides a comprehensive review of the literature on the topic, highlighting the importance of public investment in improving health outcomes and the need for further research in this area.This study reviews the impact of public investment on health population in BRICS countries. It examines the effects of foreign direct investment (FDI) and economic policy uncertainty on health outcomes, focusing on how these factors influence population health in BRICS nations. The paper analyzes the role of public investment in improving health outcomes, considering both the positive and negative impacts of FDI on economic growth and health. It highlights the importance of public investment in enhancing health outcomes, particularly in the context of BRICS countries. The study also discusses the relationship between FDI and health outcomes, noting that while FDI can contribute to economic growth and improve health outcomes, it may also have negative effects on health in underdeveloped nations. The paper reviews existing literature on the topic, identifying gaps in research and suggesting areas for further investigation. It concludes that public investment plays a crucial role in improving health outcomes, and that further research is needed to fully understand the relationship between FDI, public investment, and health outcomes in BRICS countries. The study also emphasizes the need for more research on the impact of FDI on health outcomes, particularly in developing countries. The paper provides a comprehensive review of the literature on the topic, highlighting the importance of public investment in improving health outcomes and the need for further research in this area.