[Intersectoriality, social and environmental determinants and health promotion]

The study seeks to analyze intersectoriality from the socio-environmental perspective on health promotion. Qualitative research was conducted in six municipalities in Belo Horizonte, Minas Gerais, Brazil. The data were obtained from the mapping of health promotion experiences considered successful by municipal managers, interviews with coordinators, professionals and participants and observations of participants of the practices. The data were subjected to thematic content analysis. Intersectoriality was revealed as a premise for the political definition of the majority of the practices. At the normative program level, the social assistance sector has shown greater potential to develop intersectorial practices and centrality in the implementation grid due to its involvement with the social and environmental determinants. The results indicate that there is a gap between the intention to practice intersectoriality, witnessed by the political decisions in the municipalities, and effective intersectorial action in everyday life. The conclusion reached is that there is potential for intersectorial interventions on the social and environmental determinants in favor of health promotion, but the lack of consistency between what occurs in practice and the political aspects reveal a challenge to be overcome.