The Etiology of Human Breast Cancer

Breast cancer is probably the most frequent and fatal neoplasm in women of the western world, and it causes more fear, suffering and morbidity than any other disease in our times. It is also one of the most costly diseases not only in "lost earnings" but also in terms of physical and psychic energy spent and skills used for the many aspects of its care. Furthermore, the incidence of this tumor is slowly but steadily increasing while our means of treating it remain ineffec­ tive in distressingly