The study follows research linking 9/11 to a decrease in male births.
Mirroring the findings of previous studies, stress levels appeared to affect the sex of the babies, thefound. The authors explained that in the general population, there are 105 males born for every 100 females. But in the women who were stressed, the ratios shifted to 4:9 for physically stressed mothers, and 2:3 for those under psychological stress.Physically stressed mothers were also 22 percent more likely to give birth 1.
Catherine Monk, from the Columbia University Vagelos College of Physicians and Surgeons, said in a statement. Speaking to Newsweek, Monk said the findings add to the body of research showing the importance of supporting women and their partners during pregnancy—through public policy and health care systems.
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