ntroduction: Breast cancer (BC) is one of the most common neoplasms worldwide, with genetic, environmental,and behavioral factors contributing to its incidence. Methodology: This study aimed to analyze the mainenvironmental and behavioral factors involved in BC genesis using an Integrative Literature Review (ILR). Thismethodology allowed for the search, critical evaluation, and synthesis of multiple studies on the topic. The researchwas conducted in recognized databases such as BVS, SciELO, and PubMed, using specific descriptors. A total of5,739 articles were analyzed, of which 22 were selected for in­depth analysis, resulting in the final inclusion of 11relevant studies. The inclusion criteria encompassed studies investigating environmental, behavioral, andoccupational factors related to BC, while the exclusion criteria eliminated research focusing solely on clinicalaspects or lacking a clear methodology. Results and Discussion: The results highlighted that behavioral factorssuch as obesity, excessive alcohol consumption, inadequate diet, physical inactivity, night shift work, and prolongeduse of contraceptives significantly increase the risk of BC. From an environmental perspective, exposure topollutants, heavy metals, chemicals, and poor air and soil quality were also associated with disease development.Conclusion: The review concludes that most BC risk factors are modifiable, reinforcing the need for lifestylechanges and public policies aimed at prevention. Additional studies are essential to deepen these associations andstrengthen disease control strategies