Friday, March 20th, 2015
There have been a few recent studies about autism, and the latest study has found an association between children conceived via infertility treatments, like in vitro fertilization (IVF), and autism.
The report, which was published in the American Journal of Public Health, followed nearly 6 million children, including 48,865 conceived through assisted reproduction and 32,922 with autism.
Researchers noticed that children were twice as likely to have autism if they were conceived through IVF, especially by women under 35. However, the risk of autism was significantly decreased when only a single embryo was transferred during IVF.
“Knowing that one can largely reduce the risk of autism by restricting the procedure to single-egg transfer is important for women who can then make better informed decisions,” said Peter Bearman, a professor of social sciences of Columbia University.
It’s important to note that the study did not conclude a direct cause-and-effect link, but an association—so the potential link could still be the result of other factors, including a mom’s birth age and multiple births, rather than the infertility procedure itself.
“There is an association between IVF and autism, but when we control for the characteristics of women who are more likely to use IVF, for example, age and social status, this association is lessened significantly,” said Dr. Bearman.
Caitlin St John is an Editorial Assistant for Parents.com who splits her time between New York City and her hometown on Long Island. She’s a self-proclaimed foodie who loves dancing and anything to do with her baby nephew. Follow her on Twitter: @CAITYstjohn
Image: In vitro fertilization via Shutterstock
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Autism, autism in children, autism news, autism research, autism risks, conceiving, conception, IVF, ivf treatments, new research, new study, pregnancy and autism | Categories:
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Monday, March 24th, 2014
When it comes to getting pregnant, there’s the old saying, “Stop worrying. It will happen once you stop trying.” Well, now there is a new study to back it up. During the study, those with high alpha-amylase levels (a sign of long-term stress) had double the risk of infertility. The New York Times reports:
Over four years, 401 women who were stopping contraception and trying to have a baby underwent saliva testing for two stress-related substances: the enzyme alpha-amylase, and the hormone cortisol. The women provided a saliva sample upon enrollment in the study, and then another at their first observed menstrual period, so that comparisons between the women could be made from the same starting point.
Researchers analyzed the samples and then followed the women to see how long it took them to become pregnant. Women who became pregnant during the first month of the study (before they could give a second saliva sample) were also included in the analysis.
The scientists defined infertility as a failure to become pregnant after 12 months of unprotected intercourse. During the study, published Monday in Human Reproduction, 347 women became pregnant and 54 did not.
There was no association of cortisol with fertility. But those whose alpha-amylase levels were in the highest third, a sign of longstanding stress, had more than double the risk of infertility. The scientists controlled for age, race, income and other health and socioeconomic factors.
The lead author, Courtney D. Lynch, director of reproductive epidemiology at Ohio State University, said that if a woman was having difficulty becoming pregnant, it would be harmless, and might be helpful, to consider stress-reduction techniques.
“Yoga, meditation, mindfulness have been successful in other health outcomes,” she said, “and might be helpful for fertility as well.”
Are you maximizing your fertility? Take our quiz and find out!
Image: Young caucasian girl sitting and checking pregnant test over white via ShutterStock
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