Objective: To describe the sociodemographic characteristics of women related to resistance to breast cancer. Methods: Cross-sectional study, with a quantitative approach, whose research took place in the Basic Family Health Units of the municipality of Mossoró. The study included 362 women aged between 40 and 69 years. One used a validated questionnaire with questions divided into five blocks. The data were entered in a spreadsheet, transferred to the SPSS software, and subsequently coded to perform the analysis. The Research Ethics Committee of the State University of Rio Grande do Norte, in Opinion No. 356958, approved the project. Results: Black women were two times more likely to be resistant when compared to white women (OR = 2.01, 95% CI = 1.12-3.69; p = 0.018). Women who have studied up to primary school 122 (58.1%) were two times more likely to be resistant when compared to those 14 (6.7%) who studied up to higher education (OR = 2.69; 95% CI = 1.31-5.48; p = 0.012). Women who had first-degree relatives with breast cancer 153 (72.9%) were three times more likely to be resistant. Conclusions: The findings show the need for investments in educational practices with a view to public awareness and professionals' training to disseminate information regarding tests used in practice directed to women's health.