The chapter discusses the relationship between health and economic development, emphasizing the significant impact of health investments on economic growth, productivity, and poverty reduction. It highlights three research projects conducted in Latin America and the Caribbean, which explore the effects of improved health on economic growth, human productivity, and the reduction of health inequalities. The projects, involving economists and public health experts, reveal that health improvements are crucial for economic development and can contribute to poverty alleviation. The chapter also addresses the importance of health information systems in public health policy, detailing the Mexican reform that improved health data collection and analysis, leading to better health services and policies. Additionally, it touches on the global issue of obesity and fast food consumption, noting the health risks associated with these trends and the need for regulatory measures to prevent further health crises.The chapter discusses the relationship between health and economic development, emphasizing the significant impact of health investments on economic growth, productivity, and poverty reduction. It highlights three research projects conducted in Latin America and the Caribbean, which explore the effects of improved health on economic growth, human productivity, and the reduction of health inequalities. The projects, involving economists and public health experts, reveal that health improvements are crucial for economic development and can contribute to poverty alleviation. The chapter also addresses the importance of health information systems in public health policy, detailing the Mexican reform that improved health data collection and analysis, leading to better health services and policies. Additionally, it touches on the global issue of obesity and fast food consumption, noting the health risks associated with these trends and the need for regulatory measures to prevent further health crises.