Nowadays, the growth of obesity, especially in socially vulnerable groups, reveals the complex nature of food patterns involving socioeconomic and cultural aspects. In this scenario, there has been slow progress in intervention actions for this issue. In general, initiatives to reduce obesity tend to focus on changes in diet behavior and individual sector strategies. They underestimate broader aspects social inequalities, symbolic dynamics and cultural local situations. Faced with this reality, the objective of this study was to investigate the phenomenon of obesity in a context marked by poverty incorporating the constructivist perspective. About 24 interviews and 3 focus groups were performed. The expectation was to analyze perceptions, interpretations and practices around food and body fat. The results revealed fundamental components to be observed in the design of public policies aimed at the reduction of obesity. Concentrating in this direction, actions directed to the promotion of social equity and gender equality, as well as greater access to food, education, technology and the quality of health care, especially in the postpartum period, seems more promising ways of dealing with the problem of obesity in this local context.