Margaret Sanger,
The Case for Birth Control: A Supplementary Brief and Statement of Facts
“ MATERNAL MORTALITY AND DISEASES AFFECTED BY PREGNANCY This chapter shows that the female death-rate is much greater during the child-hearing age than at other periods and notably greater than the male death-rate at any period. The outstanding fact is that this abnormal female death-rate, between the ages of 15 and 45, must be ascribed to too frequent pregnancies and to those diseases of the lungs, heart and kidneys which are hastened by pregnancy. Ninety-five per cent. of such deaths could be averted by the dissemination of knowledge to prevent conception. ”
