Introduction: Chronic diseases stand out on the world stage due to the impact they cause on population morbidity and mortality. In the case of persons deprived of their liberty, the situation is intensified by the restriction in the choice of food and access to physical exercise. Objective: To identify the risk factors that influence the eating habits of overweight and obese incarcerated women. Methods: Cross-sectional study, conducted with 31 participants. Data collection took place in the second half of 2018, comprising individual interviews of incarcerated women using a semi-structured questionnaire and measurement of anthropometric measures. The data were systematized in electronic spreadsheets and statistical analysis was performed in a descriptive way. The study complied with ethical standards from national guidelines. Results: A greater prevalence of overweight and obesity was identified in young, multiparous women, with low education and lower income. Most used tobacco and had less than a year in prison. Despite being overweight and obese, they felt good about their body, which may be reflecting on their lifestyle, through sedentary lifestyle, self-care deficit and consumption of products and foods with low nutritional value. Conclusion: Overweight and obesity are multifactorial and are not related only to behavioral aspects. It is necessary to carry out new research approaches that clarify the health weaknesses in prison, making it possible to provide a better quality of life for this population group.