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For Women Trying to Conceive, Going to Bed on Time May Reduce the Time It Takes to Become Pregnant

Note: All information is embargoed until the time of presentation at the Scientific Congress, unless otherwise indicated.

HIGHLIGHTS FROM THE AMERICAN SOCIETY FOR REPRODUCTIVE MEDICINE’S 2018 SCIENTIFIC CONGRESS & EXPO

Embargoed for Release: 12:01 am CDT Monday, October 8, 2018 

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Eleanor Nicoll - enicoll@asrm.org - 202-863-2439  (thru Oct 5) - 240-274-2209 mobile                    
Sean Tipton - stipton@asrm.org - 202-863-2494 (thru Oct 3)

Note: Press room open Sun. October 7, 2pm-5pm CDT; Mon. October 8-Wed. October 10 8:00am-5:30pm CDT.

For Women Trying to Conceive, Going to Bed on Time May Reduce the Time It Takes to Become Pregnant

Denver, CO-  Researchers from Washington University in St. Louis, Missouri presented their findings today at the ASRM’s Scientific Congress and Expo in Denver, Colorado.  In a prospective cohort study designed to determine the associations of different measures of chronodisruption with time to conception (TTC), they found that women who were trying to become pregnant, who had more regular bedtimes, took less time to conceive than those whose bedtimes were more erratic.

They recruited women from the community who were planning pregnancy and issued them actigraphy watches to wear continuously for two weeks to record and measure their activity and rest cycles. Participants were included in the study if they had at least seven days of usable actigraphy data and a confirmed conception date. IVF patients were excluded.

The actigraphy data was used to ascertain the women’s times of sleep onset, waking, and sleep duration. Because most used alarm clocks, very little variation was observed in their wake-up times.  Participants were placed in quartiles based on how much their sleep onset time varied from day to day. Women in the lowest quartile had variations of less than 67 minutes a day in the time they went to sleep each night. Bedtimes for women in the highest quartile varied by more than 138 minutes.

Of 176 participants, 75 were pregnant by the end of the year following the initiation of the study. Those who became pregnant were more likely to be white, have a lower BMI, and have higher levels of education and income.  After adjusting for income and BMI, participants with less variation in the time they went to sleep had significantly shorter TTC than women whose sleep onset was less predictable. Neither sleep duration nor wake-up time was associated with shorter TTC.

Elizabeth Ginsburg, MD,  member of ASRM’s Board of Directors, commented, “We know that adequate sleep is important to normal hormonal regulation and healthy functioning. This study indicates that, for women planning to conceive, the establishment of regular sleep habits could be advantageous.”

O-125  L. Wan et al, CHRONODISRUPTION IS ASSOCIATED WITH DELAYED TIME TO CONCEPTION. 

 

ASRM is a multidisciplinary organization dedicated to the advancement of the science and practice of reproductive medicine. The Society accomplishes its mission through the pursuit of excellence in education and research and through advocacy on behalf of patients, physicians, and affiliated health care providers. The Society is committed to facilitating and sponsoring educational activities for the lay public and continuing medical education activities for professionals who are engaged in the practice of and research in reproductive medicine. www.asrm.org 


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E: stipton@asrm.org

Eleanor Nicoll
Ph: 202-863-2349 or 240-274-2209 (mobile)
E: enicoll@asrm.org

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