That women who expect to develop cancer of the breast should have their ovaries destroyed by knife, X-ray or radium was a suggestion which Dr. Wallace Edgar Herrell of the Mayo Clinic last week proposed in the American Journal of Cancer. His theory: female sex hormones affect the breast; mice deprived of their sex hormones do not develop cancer of the breast; cancer of the breast improves in some women after oöphorectomy (castration).
Dr. Herrell's facts: among the women patients of the Mayo Clinic, breast cancer is rare among those who have been castrated, common...
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