While abortion has yet to be identified as the leading cause of breast cancer, insofar as it is elective, it is the most preventable…
Following is a partial list of various medical studies linking induced abortion with breast cancer as of 1996. Several other studies since then have drawn similar conclusions:
1. There was a higher rate of both spontaneous and induced abortions among breast cancer patients; increased risk ranged from 100 percent to 400 percent among the different subgroups. � M. Segi, I. Fukushima; M. Kurihara; �An Epidemiological Study of Cancer in Japan,� GANN, Vol. 48 (1957)
2. �There was a significant excess of [cancer] cases reporting one or more abortions.� � S. Yuasa and B. McMahon, �Lactation and Reproductive Histories of Breast-Cancer Patients in Tokyo, Japan,� Bulletin of the World Health Organization, Vol. 42 (1970)
3. Women with one or more abortions had a cancer risk 50 percent higher than that of women who have not had an abortion; with two or more abortions, the risk rose to 100 percent. � T.M. Lin; K.P. Chen; B. McMahon, �Epidemiologica Characteristics of Cancer in the Breast in Taiwan,� Cancer, Vol. 27 (1970)
4. Thirty-seven percent of patients who developed breast cancer after menopause have had at least one abortion, while only 27 percent of women with other cancers reported having had an abortion. � K. Stavarky and S. Emmons, Breast Cancer in Pre-Menopausal and Post-Menopausal Women,� Journal of the National Cancer Institute, Vol. 53 (1974)
5. The rate of breast cancer among women in Finland increased with the number of abortions. � I. Soini, �Risk Factors of Breast Cancer in Finland,� International Journal of Epidemiology, Vol. 6 (1977)
6. Women whose pregnancies lasted four months or less showed a statistically significant increase in breast cancer.– N.W. Choi; G.R. Howe; A.B. Miller; V. Matthews; R.W. Morgan; L. Munan; J.D. Burch; J. Feather; M. Jain; A. Kelly, “An Epidemiologic Study of Breast Cancer,” American Journal of Epidemiology, Vol. 107 (1978)
7. A case-controlled study in the North Caucasus, Soviet Union, found an increased risk of 240 percent in women with three or more induced abortions. With one or two induced abortions, the increase in risk was 100 percent. –V.V. Dvoirin and A.B. Medvedev, “The Role of Reproductive History in Breast Cancer Causation,” Methods and Results of Studies of Breast Cancer Epidemiology, Tallinn, Estonia (in Russian) (1978)
8. “Pregnancies of less than four to five months duration may be associated with an increased risk.” – J.L.Kelsey, “A Review of the Epidemiology of Human Breast Cancer,” Epidemiology Review, Vol 1 (1979)
9. First-trimester abortion of first pregnancies led to increased risk of 140 percent among women under 32 years of age. – M.C. Pike; B.E. Henderson; J.T. Casagrande; I Rosario; G.E.Gray; “Oral Contraceptive Use and Early Abortion as Risk Factors for Breast Cancer in Young Women,” British Journal of Cancer, Vol. 43 (1981)
10. Women with one abortion had twice as many recurrences of cancer as those with none; women with two or more abortions had three times as many recurrences of cancer. – H.E. Ownby; S. Martino; L.D. Roi; L. Howard; J. Russo; S. Brooks; M.J. Brennan, “Interrupted Pregnancy as One Indicator of Poor Prognosis in t1, T2, No, Mo Primary Breast Cancer,” Breast Cancer Resources and Treatment, Vol. 3 (1983)
11. The risk of developing breast cancer was 52 percent higher among women with an induced abortion than for women who had no abortions. – T. Hirohata, T. Shigematsu, A.M.Y. Nomura, “Occurrence of Breast Cancer in Relation to Diet and Reproductive History: A Case-Control Study in Fukuoka, Japan,” National Cancer Institutute, Vol. 69 (1985)
12. Abortion before a first live birth, after adjusting for other known risk factors, increased the risk of developing breast cancer by 250 percent. – O.C. Hadjimichael, C.A. Boyle, J.W. Meigs, “Abortion Before First Live Birth and Risk of Breast Cancer,” British Journal of Cancer, Vol. 53 (1986)
13. The termination of a first pregnancy before 28 weeks increased the risk of cancer by 43 percent; two or more abortions before the first full pregnancy increased the risk by 73 percent; one induced abortion with no live births increased the risk by 285 percent. – M. Ewertz; S.W. Duffy, “Risk of Breast Cancer in Relation to Reproductive Factors in Denmark,” British Journal of Cancer, Vol. 58 (1988)
14. Among women who developed breast cancer while pregnant: those who carried pregnancy to term had a 20 % survival rate; women who miscarried received more aggressive treatment and had a 42 % survival rate; but every woman who chose abortion died. – R.M. Clark and T. Chua, “Breast Cancer and Pregnancy: The Ultimate Challenge,” Clinical Oncology of the Royal College of Radiology, Vol. 1 (1989)
15. The abortion of a first pregnancy led to an increased risk of 90 %, and repeated abortions heightened the risk by 300 %. – H.L. Howe; R.T. Senie; H. Bzduch; P. Herzfeld, “Early Abortion and Breast Cancer Risk Among Women Under 40,” International Journal of Epidemiology, Vol. 18 (1989)
16. Women who had an abortion before a live birth had an 88 % greater risk of breast cancer than did women who had a live birth before an abortion. – B.M. Lindefors-Harris; G. Eglund; O. Meirik; L.E. Rutqvist; K. Wiklund, “Risk of Cancer of the Breast After Legal Abortion During First Trimester: A Swedish Register Study,” British Medical Journal, Vol. 299 (1989)
17. Aborting a first pregnancy led to more aggressive cancer tumors. – H. Olsson; J. Ranstam; B. Baldetorp; S.B. Ewers; M. Ferno; D. Killander; H. Sigurdsson, “Proliferation and DNA Ploidy in Malignant Breast Tumors in Relation to Early Oral Contraceptive Use and Early Abortions,” Cancer, Vol. 67 (1991)
18. Breast cancers of women who aborted their first pregnancy showed many times the normal rate of INT2—a specific gene associated with breast cancer. – H. Olsson; A. Borg; M. Ferno; J. Ranstam; H. Sigurdsson, “Her-2/neu and INT2 Proto-Oncogene Amplification in Malignant Breast Tumors in Relation to Reproductive Factors and Exposure to Exogenous Hormones,” Journal of the National Cancer Institute, Vol. 83 (1991)
Source: LIME 5 (the book), available from Life Dynamics (see klanparenthood.com)
More in-depth/ updated info is available at abortionbreastcancer.com, cbrinfo.com, all.org, and afterabortion.org.
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