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Stress impacts ability to get pregnant, study finds

Date:
March 24, 2014
Source:
Ohio State University Wexner Medical Center
Summary:
Women who have trouble getting pregnant may be under too much stress, according to a new study. According to researchers, women who had the highest levels of stress actually took 29 percent longer to get pregnant compared to other women, and their risk of infertility doubled. Researchers tracked 501 American women ages 18 to 40 years who were free from known fertility problems and had just started trying to conceive, and followed them for 12 months or until they became pregnant.

Researchers have found that the more stress women are under while trying to get pregnant, the harder it is. While Abigail David and her husband were trying to conceive, the stress of working full time and trying to start a business may have delayed Abigail's pregnancy. A new study led by researchers at the Ohio State University Wexner Medical Center found that women who were found to have high levels of a stress biomarker had a 29 percent decrease in the probability of getting pregnant and her risk of infertility doubled.
Credit: Ohio State University Wexner Medical Center

Having difficulty getting pregnant can be an incredibly stressful experience for any couple. Now, for the first time, researchers have data that suggests preconception stress might play a role in infertility.

Extending and corroborating their earlier study conducted in the UK that demonstrated an association between high levels of stress and a reduced probability of pregnancy, this work adds new insight by suggesting that stress is associated with an increased risk of infertility. The study findings appear online in the journal Human Reproduction.

Courtney Denning-Johnson Lynch, director of reproductive epidemiology at The Ohio State University Wexner Medical Center, and colleagues found that women with high levels of alpha-amylase -- a biological indicator of stress measured in saliva -- are 29 percent less likely to get pregnant each month and are more than twice as likely to meet the clinical definition of infertility (remaining not pregnant despite 12 months of regular unprotected intercourse), compared to women with low levels of this protein enzyme.

Researchers tracked 501 American women ages 18 to 40 years who were free from known fertility problems and had just started trying to conceive, and followed them for 12 months or until they became pregnant as part of the Longitudinal Investigation of Fertility and the Environment (LIFE) Study. Saliva samples were collected from participants the morning following enrollment and again the morning following the first day of their first study-observed menstrual cycle. Specimens were available for 373 women and were measured for the presence of salivary alpha-amylase and cortisol, two biomarkers of stress.

"This is now the second study in which we have demonstrated that women with high levels of the stress biomarker salivary alpha-amylase have a lower probability of becoming pregnant, compared to women with low levels of this biomarker. For the first time, we've shown that this effect is potentially clinically meaningful, as it's associated with a greater than two-fold increased risk of infertility among these women," said Lynch, the principal investigator of the LIFE Study's psychological stress protocol.

Lynch said results of this research should encourage women who are experiencing difficulty getting pregnant to consider managing their stress using stress reduction techniques such as yoga, meditation and mindfulness. However, she said that couples should not blame themselves if they are experiencing fertility problems, as stress is not the only or most important factor involved in a woman's ability to get pregnant.

Germaine Buck Louis, director of the Division of Intramural Population Health Research of the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) and the LIFE Study's principal investigator, said, "Eliminating stressors before trying to become pregnant might shorten the time couples need to become pregnant in comparison to ignoring stress. The good news is that women most likely will know which stress reduction strategy works best for them, since a one-size-fits-all solution is not likely."


Story Source:

The above story is based on materials provided by Ohio State University Wexner Medical Center. Note: Materials may be edited for content and length.


Journal Reference:

  1. C. D. Lynch, R. Sundaram, J. M. Maisog, A. M. Sweeney, G. M. Buck Louis. Preconception stress increases the risk of infertility: results from a couple-based prospective cohort study--the LIFE study. Human Reproduction, 2014; DOI: 10.1093/humrep/deu032

Cite This Page:

Ohio State University Wexner Medical Center. "Stress impacts ability to get pregnant, study finds." ScienceDaily. ScienceDaily, 24 March 2014. <www.sciencedaily.com/releases/2014/03/140324090406.htm>.
Ohio State University Wexner Medical Center. (2014, March 24). Stress impacts ability to get pregnant, study finds. ScienceDaily. Retrieved July 26, 2014 from www.sciencedaily.com/releases/2014/03/140324090406.htm
Ohio State University Wexner Medical Center. "Stress impacts ability to get pregnant, study finds." ScienceDaily. www.sciencedaily.com/releases/2014/03/140324090406.htm (accessed July 26, 2014).

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