In the wake of Elizabeth Edwards death, many women are wondering whether fertility treatments of the former Senator learned woman to bear children - leaves two young children at the age of 10 and 12 - late in life could have helped the breast cancer, you killed.
It is available including estrogen and progesterone - often repeated a plausible concern, as the fertility treatment makes women unnaturally high levels of hormones, and sometimes in an age, when those hormones would be typically decline. Previous data have suggested that drugs increased risk for breast cancer, uterine and ovarian cancers can be associated with this fertility. (More on time.com: building a brighter kid: consider IVF)
But a major new study published this month in human reproduction suggests that women who are subjected to in vitro fertilization (IVF) - used procedure of Edwards understand your youngest children - even in a higher than normal risk of cancer not provided. The study examined data on all IVF births in Sweden between 1982 and 2006, compare the rate of cancer in 24,058 who designed the nearly 1.4 million Swedish mothers with about IVF was required not fertility treatment.
The study found that the risk of any cancer actually was 26% less women after they had children through IVF, compared with those who had designed the old-fashioned way. Breast cancer risk was 24% and cervical cancer reduced risk 39% over the eight-year follow-up period. (More on time.com: photos: the landscape of cancer treatment)
"The ultimate news is that there no increase in cancer risk with IVF," says Dr. Don Dizon, Associate Professor of Obstetrics Gynecology at Alpert medical school of Brown University, which the research was associated with.
However, women began, the IVF underwent with higher rates of cancer than those in the general population; the fact that these women were rather treated for cancer, were causes infertility is likely why you IVF tried. This risk was particularly increased for ovarian cancer: women, IVF which almost the risk of ovarian cancer was four times greater than in other mothers before conception. That's probably because the same issues that can also produce ovarian cancer infertility. "Have an ovary which develop a tendency to cancer has it too bad happen, work could", says Dr. Bengt Kallen, Professor Emeritus of the University of Lund and main author of the study. (More on time.com: special report: advances for women with breast cancer)
However, the study found that the risk of ovarian cancer in women who were able to conceive and give birth, was a baby by IVF only twice as high as mothers, of course designed. The effect was not because IVF reduces the chances of developing ovarian cancer, say the authors; Instead it is more likely that women are able to design and complete IVF pregnancy probably are healthier than other women, and shall be subjected to more regular screening for cancer. The same phenomenon is likely to explain the lower risk of breast and cervical cancer in the same group.
The new study, the most recent research in line is, says Kallen, pointing out that while some studies have found a small increased risk in cancer for some subgroup of women with fertility treatment, others can find any risk. (More on time.com: breast feeding after breast cancer is OK)
"It's a really neat study," says Dizon. "The fact that there is a large prospectively followed group is a very strong plus".
The study found also in women undergoing IVF older than 30, compared with younger women any increased risk of cancer. But it could not determine whether repeated cycles influenced IVF cancer risk, nor could it provide data on the risk in women who underwent fertility treatment but not understand. Was the average age of participants was subjected to a treatment 32, and the average period eight years, meaning that the study would have recorded not cancers occurred later in life.
"You should have the reservation that these women still;" are not very old are mainly premenopausal. What happens at a higher age we still don't know, ", admits Kallen." "Healthy common sense says that if you increase risk because of the hormonal treatment, pretty quickly should appear for 10 years." "You would not expect, 20, 30, 40 years later, but you know never to see."
More at time.com:
What Elizabeth Edwards' kids?
Development of artificial ovary
When you give up on IVF
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