Study: A stressful pregnancy reduces the chances of having a boy

By: Team Ifairer | Posted: 16-10-2019

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Pregnant women experiencing physical and psychological stress are less likely to have a boy, says a new study. "Stress can also affect the mother's immune system, leading to changes that affect neurological and behavioural development in the foetus," said study leader Catherine Monk, Professor at Columbia University Vagelos College in the US. "What's clear from our study is that maternal mental health matters, not only for the mother but also for her future child," Monk said.

For the findings, published in the journal PNAS, the research team examined 27 indicators of psychosocial, physical and lifestyle stress collected from questionnaires, diaries, and daily physical assessments of 187 otherwise healthy pregnant women, aged between 18 to 45.

About 17 per cent of the women were psychologically stressed, with clinically meaningful high levels of depression, anxiety, and perceived stress. Another 16 per cent were physically stressed, with relatively higher daily blood pressure and greater caloric intake compared with other healthy pregnant women. The majority (nearly 125) were healthy.

The study suggested that pregnant women experiencing physical and psychological stress are less likely to have a boy. The sex ratio in the physically and psychologically stressed groups favoured girls, with male-to-female ratios of 4:9 and 2:3, respectively.

study, a stressful pregnancy reduces the chances of having a boy, stressed women are more likely to give birth to a girl, stress, pregnancy, ifairer

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