Resumen
Breast cancer is a significant health problem affecting millions of women worldwide, particularly post-menopausal women. Although early detection and treatment have improved, many patients still develop metastatic disease. Recent research has focused on using the immune system to diagnose and treat breast cancer. The breast immune microenvironment regulates tissue homeostasis and resistance to tumor growth. This review examines how the immune system changes with age, how these changes affect breast cancer development and progression, and how targeted therapies that utilize the immune system can improve patient outcomes. It emphasizes the importance of understanding the relationship between aging, the immune system, and breast cancer, and the potential of immune-based therapies to combat this devastating disease.