This learning activity provides a comprehensive overview of breast cancer in women under 40, focusing on its epidemiology, risk factors, and unique challenges in diagnosis and management. It emphasizes the crucial role of nurses in early detection, risk assessment, and patient education. The learning activity covers incidence rates, genetic and lifestyle risk factors, assessment tools, clinical presentations, and diagnostic techniques specific to this age group. It also highlights emerging research areas and the importance of tailored screening approaches for young women at risk of breast cancer.