Dr. Janet Daling’s Abortion/Breast Cancer Study
Critics who formerly dismissed the possibility of a causal relationship between induced abortion and breast cancer
are increasingly on the defensive, largely as a consequence of the findings of a fascinating study. This study did
manage to be published in the November 2, 1994 issue of the Journal of the National Cancer Institute (JNCl).
The exhaustive work of Dr. Janet Daling and her colleagues at Seattle's Fred Hutchinson Cancer Research Center
examined the possible linkage between abortion and breast cancer. Funded by the National Cancer Institute and
directed by a woman who describes herself as "pro-choice," the study can hardly stand accused of coming at the
issue with a pro-life tilt.
As expected, an accompanying editorial written by Dr. Lynn Rosenberg in the same JNCI went out of its way to
minimize and explain away the evidence which strongly supported the case that an induced abortion places women at
a greater risk for breast cancer.
A number of factors contributed to making Dr. Daling's "Risk of Breast Cancer Among Young Women: Relationship to
Induced Abortion" a cross-roads in the debate over whether abortion increases a woman's chance of contracting breast
cancer. These significant factors include:
1. The size of the study (1,806 women -- 845 women who had breast cancer were compared with a "control" group of
961 women who did not);
2. Its thoroughness -- women were interviewed one-on-one in their homes for two hours;
3. Daling, et. al.'s conclusion that a spontaneous abortion, a miscarriage, does not heighten the risk,
putting the emphasis back where it belongs, on induced abortion.
4. The demonstration that the risk of developing breast cancer increased after an induced abortion, regardless
of how old the mother was at the time of the abortion, how old the unborn child was, or whether the woman had
given birth before.
What specifically did the Daling study show? Most media reports concentrated on the finding that, on the average,
the chance of a woman having breast cancer before she turns 45 increases by 50 percent if she has had an abortion.
But this heightened danger was dismissed in the accompanying JNCI editorial as "small in epidemiological terms."
If breast cancer were rare or abortion infrequent, this editorial counter would carry more weight. There are,
however, 182,000 new cases of breast cancer diagnosed every year and 46,000 women die annually.
Add to this the roughly 1,530,000 abortions per year and this so-called "small" increased risk means a huge number
of new cases of breast cancer.
For example, abortion aside, a woman today has roughly a 10 percent chance of contracting breast cancer in her
lifetime. But because every year so many women are having an abortion, even if the abortion decision increases the
risk by one-half, or 50 percent (from 10 percent to 15 percent), in a few decades the results will be, at a minimum,
an additional 40,000 cases of breast cancer every year.
But the Daling study contained even more frightening results, largely ignored by the media. If a woman had
obtained her first abortion after age 30, her risk jumped by 110 percent. And if she had her first abortion
before she turned 18, the likelihood of having breast cancer increased by 150 percent.
Worse yet, if she has a family history (mother, sister, aunt) of breast cancer and had a first abortion after age
30, her risk went up by 270 percent.
Most ominous of all were the results for women who had had an abortion before age 18 and who also had a family
history of breast cancer. Twelve women in the Daling study fit that description. EVERY ONE OF THEM DEVELOPED BREAST
Even, if one had only a tiny shred of common decency left in their entire body, you would think that abortion
clinics would at LEAST warn these teen age girls that they should avoid an abortion at all cost.
But no, they are not warned, not even by the NCI and the ACS, and yet these two groups, which exist to warn the
public of cancer risks, admit that aborting your first child, even with no history of breast in the family,
increases the risk of breast cancer.
These young girls are literally thrown to the wolves just to protect the abortion industry. What’s so sad, is that
most physicians are not complaining about it.
The truth will come out, but in the meantime thousands of women will continue to die every year, needlessly. It's
big tobacco all over again. It took 40 years before people were warned of the dangers of smoking.
Daling's study, however, only followed women into their forties. What about later in life?
A path-breaking but vastly underreported study in the December 1993 issue of the Journal of the National Medical
Association traced the breast cancer experience of about 1,000 black women (500 with breast cancer, 500 without) as
they grew older. "Breast Cancer Risk Factors in African-American Women: The Howard University Tumor Registry
Experience" confirmed that the risks of breast cancer increased much more for women who had aborted than for those
who had not.
This fine study found the same overall 50 percent increased risk factor for women under 40 who had aborted. But
black women now in their 40s who had aborted experienced a 180 percent increased risk. The risk jumped to a
whopping 370 percent for black women over 50 who had aborted.
We've always known that abortion is lethal to unborn babies; only of late has abortion's dangers to pregnant women
become unmistakably clear as well.
Many press outlets have bent over backwards to hide the stark facts about abortion and breast cancer. However, with
more studies "in the pipeline," it is only a matter of time before the truth wins out.
In the meantime, thousands of women will continue to die of breast cancer every year solely from the fact they had
Now, read the following pathetic criticism of the Daling study. Note, there is no evidence to contradict the
study, only wishful thinking and double talk.
Commenting on the report by Daling et al., Lynn Rosenberg of the Boston University School of Medicine noted that,
"a number of studies have produced contradictory conclusions regarding a link between induced abortions and breast
cancer risk. If the women with breast cancer, who were more willing than healthy women to participate in this
study, were also more willing to report induced abortions, bias would have occurred."
Notice, she says IF -- then bias would have occurred. This is known as grasping for straws.
"In addition, those women reporting induced abortions had less favorable risk profiles (parity, age at first term
pregnancy, and lactation) than women reporting spontaneous abortions."
A less favorable risk profile? How much is less favorable to the beholder? Where is the detail?
Rosenberg also noted that the studies done so far have looked only at surgically induced abortions. RU486 and other
abortifacient drugs, should they ever be approved in the United States, would have to be considered separately.