Brazil is a populous high/middle-income country, characterized by deep economic and social inequalities. Like most other Latin American nations, Brazil constructed a health system that included, on the one hand, public health programs and, on the other, social insurance healthcare for those working in the formal sector. This study analyzes the political struggles surrounding the implementation of a universal health system from the mid-1980s to the present, and their effects on selected health indicators, focusing on the relevant international and national contexts, political agendas, government orientations and actors.