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Home NEWS Science News Health

Does pregnancy history affect cognitive function?

Bioengineer by Bioengineer
March 20, 2019
in Health
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Study suggests that childbearing decisions and timing are not linked to cognitive function

CLEVELAND, Ohio (March 20, 2019)–Healthy cognitive aging is a public health priority, especially as the US population grows older. Until now, not much has been known about the link between pregnancy history and cognitive function in older women. A new study finds that there does not appear to be a link. Study results are published online today in Menopause, the journal of The North American Menopause Society (NAMS).

There are a number of reproductive and pregnancy characteristics that can have consequences for health outcomes later in life. Previous epidemiologic studies have reported that pregnancy history, including age at first pregnancy, is associated with midlife and later-life health risks, including diabetes, hypertension, hypercholesterolemia, and cardiovascular disease, which have been associated with later-life cognitive function. However, simply having children, even if it is later in life, doesn’t appear to cause a cognitive decline.

Of 16 associations tested, four pregnancy exposures by four cognitive tests, only one was statistically significant. Women who reported ever being pregnant recalled 0.12 fewer words on the Buschke Selective Reminding Test for every year increase in age than women who had never been pregnant. Further, there were no significant associations between the number of pregnancies or age at first or last pregnancy and the rate of decline, implying that women waiting to have children later in life or to have more children do not need to be concerned about the effect on their cognitive abilities.

The finding was the basis of a study of more than 1,000 women, 77% of whom had at least one pregnancy, enrolled in the Rancho Bernardo Study through San Diego State University. The women attended a clinic visit between 1988 and 1992 where pregnancy history (ever pregnant, number of pregnancies, ages at first and last pregnancy) was recorded, and cognitive function was assessed with a total of four tests repeated up to seven times through 2016.

Study results appear in the article “Pregnancy history and cognitive aging among older women: the Rancho Bernardo Study.”

“Examining the change in cognitive function over time, the difference between those who had been pregnant compared with those who didn’t have children was one fewer word on recall per 10 years,” says Dr. JoAnn Pinkerton, NAMS executive director. “Neither the presence or absence of childbearing nor later age at pregnancy appears to significantly affect long-term cognition.”

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For more information about menopause and healthy aging, visit http://www.menopause.org.

Founded in 1989, The North American Menopause Society (NAMS) is North America’s leading nonprofit organization dedicated to promoting the health and quality of life of all women during midlife and beyond through an understanding of menopause and healthy aging. Its multidisciplinary membership of 2,000 leaders in the field–including clinical and basic science experts from medicine, nursing, sociology, psychology, nutrition, anthropology, epidemiology, pharmacy, and education–makes NAMS uniquely qualified to serve as the definitive resource for health professionals and the public for accurate, unbiased information about menopause and healthy aging. To learn more about NAMS, visit http://www.menopause.org.

Media Contact
Eileen Petridis
[email protected]

Tags: AgingAlzheimerEndocrinologyFertilityMedicine/HealthMortality/Longevityneurobiology
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