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If you are expecting a child, the more likely your labor is premature

Updated on July 28, 2016

Inequality begins when you are in the womb. Having a male child can lead to further complications for the mother in childbirth than having a girl, so concludes a study in Australia that has analyzed more than 550,000 births over 30 years (1981 -2011). This is the first study conducted in the country on births related to the sex of the baby. Mother problems studied were high blood pressure and gestational diabetes, a form of pregnancy-induced diabetes. The research is published in the

scientific journal Plos One.

"The main conclusion," the authors argue in a statement, "is very clear: the sex of the baby has a direct link to pregnancy and after birth." Among the results, note that baby boys are more likely to be born premature. "They have a 27% greater chance of being born between weeks 20 and 24; 24% do so between 30 and 33 and 17% born between 34 and 36 ", they say.

As for the mothers, the authors say that expectant child have a 4% increased risk of gestational diabetes and 7.5% of preeclampsia [characterized by hypertension, edema of protein in urine and excessive weight gain]. "Our results emphasize the need for specific interventions exist for babies and children, to avoid adverse consequences for mother and child," he added.

In a previous study, Australian researchers had published sex differences in the expression of 142 genes in the placenta in uncomplicated pregnancies, which can be "critical" and explain these differences then look at the time of delivery, according to the same statement.

In conclusion, the study confirms the presence of sexual dimorphism [set of morphological and physiological changes that occurs between males and females of the same species] in pregnancy. Mechanisms to understand this are still unknown, "but it is likely that gene expression and function of the placenta play an important role."

"More research on sex differences in placental function and maternal adaptation to pregnancy is required to delineate the causal molecular mechanisms in pregnancy outcome by sex of the baby," they conclude.

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