Breast cancer is the second leading cause of cancer death in women. It arises from the lobules or ducts of the breast and can spread to other parts of the body. Risk factors include gender, age, family history, obesity, alcohol use, hormone therapy and lack of physical activity. Screening methods like breast self-exams, clinical exams and mammograms can help detect breast cancer early. Treatment options depend on cancer type and stage but may involve surgery, radiation, chemotherapy and hormone therapy. With early detection and treatment, survival rates are high.