Does IVF increase the risk of cancers?

Does IVF increase the risk of cancers?

Postby Amelia on 28 Mar 2019, 15:29

Thought I need to share this. Science says, cancer of the uterus is more common in women who have not had children and cancer of the cervix is less common. However, fertility drugs cause neither of these cancers. Nor is there the slightest evidence that there is an increased risk of cancer of the breast following IVF.
In some women, there is undoubtedly a genetic factor. Ovarian cancer is about twice as common in women who have not had children. According to most studies, it is more common in women who have delayed child-bearing. Women who give birth before the age of 25 are less likely to get ovarian cancer and with each five-year delay, the chance of developing it increases by about ten per cent. Different studies show different associations with miscarriage; some report the risk is higher after a miscarriage, but others suggest it may be lower.
Women who have an early menopause (before the age of 45) are at lower risk than those who go through the menopause after they are 50. Women who use the pill for longer than five years seem to reduce their risk of ovarian cancer by around 50 per cent. It is unclear whether women on hormone replacement therapy (HRT) are at greater risk. Infertile women are about twice as likely to develop ovarian cancer. Interestingly, this effect is also seen in women married to infertile men.
There is no clear evidence of an increased risk of ovarian cancer in women having IVF treatment or fertility injections, compared with women who are infertile. There is some doubt about an increased risk in women who are given these drugs but who do not become pregnant. Unexplained infertility in some women may occasionally be due to some ovarian abnormality – which could possibly include some very early form of ovarian pre-cancer.
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Re: Does IVF increase the risk of cancers?

Postby Melanie on 22 Jun 2019, 14:44

Thank you for this post. But IVF may cause other risks, for example:
Multiple births. IVF increases the risk of multiple births if more than one embryo is implanted in your uterus. A pregnancy with multiple fetuses carries a higher risk of early labor and low birth weight than pregnancy with a single fetus does.
Premature delivery and low birth weight. Research suggests that use of IVF slightly increases the risk that a baby will be born early or with a low birth weight.
Ovarian hyperstimulation syndrome. Use of injectable fertility drugs, such as human HCG, to induce ovulation can cause ovarian hyperstimulation syndrome, in which your ovaries become swollen and painful.
Signs and symptoms typically last a week and include mild abdominal pain, bloating, nausea, vomiting and diarrhea. If you become pregnant, however, your symptoms might last several weeks. Rarely, it's possible to develop a more-severe form of ovarian hyperstimulation syndrome that can also cause rapid weight gain and shortness of breath.
Miscarriage. The rate of miscarriage for women who conceive using IVF with fresh embryos is similar to that of women who conceive naturally. But the rate increases with maternal age. Use of frozen embryos during IVF, however, may slightly increase the risk of miscarriage.
Egg-retrieval procedure complications. Use of an aspirating needle to collect eggs could possibly cause bleeding, infection or damage to the bowel, bladder or a blood vessel. Risks are also associated with general anesthesia, if used.
Ectopic pregnancy. About 2 to 5 percent of women who use IVF will have an ectopic pregnancy. It's when the fertilized egg implants outside the uterus, usually in a fallopian tube. The fertilized egg can't survive outside the uterus, and there's no way to continue the pregnancy.
Birth defects. The age of the mother is the primary risk factor in the development of birth defects, no matter how the child is conceived. More research is needed to determine whether babies conceived using IVF might be at increased risk of certain birth defects. Some experts believe that the use of IVF does not increase the risk of having a baby with birth defects.
Stress. Use of IVF can be financially, physically and emotionally draining. Support from counselors, family and friends can help you and your partner through the ups and downs of infertility treatment.
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