Researchers Uncover Hidden Risk Factor For Breast Cancer

Posted by Ardee Coolidge on Jun 28, 2016 10:00:00 AM

Excert taken from her article. You can read her article at Care-Net.org

Currently there are more than 108 world-wide studies published on abortion and breast cancer. Fifty-three of them found a strong link between abortion and breast cancer. Twenty-three studies found a small link, and only 29 found no link.

In research jargon, a "link” is properly termed a “positive association” or “increased risk” or “risk factor.” It does not define a cause and effect relationship between the risk factor and getting the disease. It’s important to note that having a risk factor does not mean you will definitely come down with a particular condition, just that you are at an increased risk of developing the disease.

Risk of Breast Cancer Among Young Women: Relationship to Induced Abortion

Janet R. Daling Kathleen E. Malone Lynda F. Voigt Emily White Noel S. Weiss
JNCI: Journal of the National Cancer Institute, Volume 86, Issue 21, 2 November 1994, Pages 1584–1592, https://doi.org/10.1093/jnci/86.21.1584

Excert from article taken from Academic.oup.com

Among women who had been pregnant at least once, the risk of breast cancer in those who had experienced an induced abortion was 50% higher than among other women (95% CI = 1.2-1.9).

The Abortion-Breast Cancer Link: How Politics Trumped Science and Informed Consent

Karen Malec Journal of American Physicians and Surgeons Volume 8 Number 2 Summer 2003

Excert from article taken from JPandS.org

Two Japanese studies showed a positive association between induced abortion and breast cancer: a 1957 study reported a statistically significant relative risk of 2.61, and a 1968 study found a relative risk of 1.51.

A landmark 1970 study by MacMahon et al. showed that childbearing was helpful in reducing breast cancer risk. The study estimated that “women having their first child when aged under 18 years have only about one-third the breast cancer risk of those whose first birth is delayed until the age of 35 years or more.” Their findings indicated that abortion might be an independent risk factor for the disease. Results “suggested increased risk associated with abortion–contrary to the reduction in risk associated with full-term births.”

Soon after legalization, abortion became a common elective procedure and created a new field of medical research. Thirty-eight epidemiological studies exploring an independent link with breast cancer have been published. Twenty-nine report risk elevations. Thirteen out of 15American studies found risk elevations. Seventeen studies are statistically significant, 16 of which report increased risk. Biological evidence provides a plausible mechanism for this statistical association.