This includes the results from a wide variety of studies and it has been determined to be definitive proof by those who believe there is no connection. I have found that almost all of those who support the "no-connection" theory reference either this fact sheet or the conference that reported the study that this fact sheet is based on.
"At this time, the scientific evidence does not support the notion that abortion of any kind raises the risk of breast cancer or any other type of cancer."
The American Congress of Obstetricians and Gynocologists (ACOG) also refers to the 2003 workshop and the above information. They however preface the information with the following statement:
"This document reflects emerging clinical and scientific advances as of the date issued and is subject to change. The information should not be construed as dictating an exclusive course of treatment or procedure to be followed."
On the other side of the debate is Dr. Joel Brind who counters in this 2005 article in the “Journal of American Physicians and Surgeons” that there was reporting bias in the 2003 workshop and subsequent 2004 report.
Dr. Brind has also mentioned that during the 2004 seminar, conflicting viewpoints were not allowed to be presented. In essence he is saying that, instead of investigation all data and letting the data dictate if the theory is true, they found data to support their theory and disregarded the rest. In some cases they may have even manipulated the studies to fit the theory.
Again, this list is published by abortion/breast cancer coalition
So who do you believe?
I have done some research and came across this article from 2010, that is peer reviewed, but that no one has, of yet, used as a weapon in this abortion/breast cancer link war entitled:
The conclusion of this study is that “Based on the researches done for the purposes of this project, we concluded that artificial interruption of pregnancy is one of the numerous causes (factors) of breast cancer arising.”
This study does not appear to have any bias and does not seem to have been sponsored by any group.
In addtion, the Breast Cancer Prevention Institute believes there is a link between abortion and breast cancer.
A pamphlet from the Breast Cancer Prevention Institute:
Abortion & Breast Cancer: Is there a Link? What is the Truth Behind the Controversy
In it they state that abortion is a factor which increases breast cancer risk:
Induced abortion leaves increased number of immature breast lobules and increases risk of premature births. It also increases estrogen exposure.
1. Estrogen Exposure
2. Breast Lobule Formation
In a viable pregnancy, estrogen levels increase 2,000% by the end of the 1st trimester. This surge in hormones causes the breasts to grow by making more Type 1 & 2 lobules where cancers can start. The breast doubles in volume by 20 weeks.
- After 32 weeks of pregnancy, the Type 1 and 2 lobules mature into Type 3 and 4 lobules in preparation for breast feeding.
- If the pregnancy ends by elective abortion, the increase in numbers of Type 1 and 2 lobules formed in the first two trimesters provide more places for cancers to start, increasing risk.
- Women who never carry a pregnancy beyond 32 weeks never fully mature their breast tissue and have increased risk.
- Women who delay full-term pregnancy past age 30 have a 90% higher risk of breast cancer than those who carry a pregnancy to term by age 20.
A woman who chooses induced abortion of her first pregnancy:
- Denies herself the risk reduction of a full-term pregnancy.
- May never have children—a risk for breast cancer.
- Or, delay a full-term pregnancy which increases her risk of premenopausal breast cancer by 5% per year delayed after age 20.
- Denies herself a further 10% reduction in risk by another full-term pregnancy.
- Will have increased the number of Type 1 & Type 2 lobules where cancers start in her breast.
The 2007 study that is mention in the video: (which comes after the 2004 report that supposedly “debunks” the theory) supports the abortion/breast cancer connection.
Being that there are such conflicting reports, I cannot state for certain that there is not an abortion/breast cancer link. If you compare the evidence from one side or the other, the side supporting the link has presented a much better case with better references. The National Cancer Institute's fact sheet that everyone else seems to reference is lacking the information department. They make a list of findings, "studies show," but really no reference to the studies upon which those findings are based.
In addition, if you remove all of the previous studies that have been biasedly used and focus on the independent study of 2010, there seems to be more proof that there is a link than there is not. If there is a link and there is a cover up, would those involved in the cover up be guilty of negligence? Would they not be criminally liable for withholding pertinent information from those receiving abortions? It is unlikely there will be a conclusion to this debate anytime in the near future. Though in my mind it seems there is, indeed, a connection between abortion and an increased risk for breast cancer.