I suggest you read : Preventing Breast Cancer Second Edition: 1996 Dr. John W. Gofman, M.D., Ph.D, This book uncovers the major cause of the recent breast-cancer incidence in the USA. The author shows that past exposure to ionizing radiation --- primarily medical x-rays --- is responsible for about 75 percent of the breast-cancer problem in the United States. The author recommends specific actions to start breast-cancer prevention now, not ten years from now. A must read also ,Pasteur Exposed: The False Foundations of Modern Medicine by Ethel Douglas Hume This is a modern edition of a manuscript first published in 1923 previously entitled BECHAMP OR PASTEUr.