The Role of Endogenous Hormones in the Etiology and Prevention of Breast Cancer: The Epidemiological Evidence

Breast cancer is the most common cause of cancer death in women worldwide. Rates vary about fivefold around the world, but they are increasing in regions that until recently had low rates of the disease. Despite the numerous uncertainties surrounding the etiology of breast cancer, intensive epidemiological, clinical, and genetic studies have identified a number of biologic and social traits as risk factors associated with it. Principal among …