The objective of this study was to know how nurses and teachers contribute to prevent and combat childhood obesity. It is a qualitative study, conducted in 2012, with data collected through interviews with three nurses from a basic health unit and eight teachers from a public school in southern Brazil. Thematic analysis pointed out as factors that contribute to childhood obesity eating unhealthy foods and the families' food culture. As actions of prevention and combat there is the promotion of

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... reast feeding, the mother's educational process and the use of recreational activities that promote children's learning about obesity. It was concluded that joint and systematic actions among nurses and teachers are important to fight childhood obesity.