Science, Space and Technology News 2024
Research from Columbia University reveals that pregnancy accelerates biological aging in women, with multiple pregnancies intensifying this effect. This phenomenon, studied through ‘epigenetic clocks’, was not observed in men, highlighting the unique impact of pregnancy and breastfeeding on women’s biological aging. The findings emphasize the need for increased support for young mothers.
Notably, the number of pregnancies fathered was not associated with biological aging among same-aged cohort men, which implies that it is something about pregnancy or breastfeeding specifically that accelerates biological aging. The findings are published inThis study builds on epidemiological findings that high fertility can have negative side effects on women’s health and longevity.
The relationship between pregnancy history and biological age persisted even after taking into account various other factors tied to biological aging, such as socioeconomic status, smoking, and genetic variation, but were not present among men from the same sample. This finding, noted Ryan, points to some aspect of bearing children – rather than sociocultural factors associated with early fertility or sexual activity – as a driver of biological aging.
Ryan said that our current understanding of epigenetic clocks and how they predict health and mortality comes largely from North America and Europe, but that the aging process can take slightly different forms in the Philippines and other places around the world.
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