Mother's blood pressure can be a crucial factor in the gender of babies

Mother's blood pressure can be a crucial factor in the gender of babies

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Study: blood pressure indicated the gender of the baby
Women certainly hear the same question a thousand times during pregnancy: does the child become a boy or a girl? For example, although some old women believe they can predict a child's gender, there are as yet no reliable ways to know the child's gender before the 20th week of pregnancy. Researchers have now found that there seems to be a way to predict gender earlier.

Canadian scientists found in an investigation that women's blood pressure can provide information about the gender of the future child. This type of gender determination can be used even before conception occurs. The doctors published the results of their study in the journal "American Journal of Hypertension".

Experts analyze the data from 1,400 women
For their investigation, the researchers analyzed the data from 1,400 newly married women in China. They particularly looked at their cholesterol, blood pressure and blood sugar levels over a period of approximately 26.3 weeks before pregnancy.

Higher systolic blood pressure before pregnancy is more likely to give birth to boys
In total, the pregnancies resulted in 739 boys and 672 girls. When the experts included external factors such as age, smoking and the Body Mass Index (BMI), an interesting fact was noticed. A higher systolic blood pressure before pregnancy led to the fact that the pregnant women were more likely to give birth to a boy, the doctors explain.

Blood pressure before pregnancy indicates the gender of the child
The results suggest that a woman's blood pressure before pregnancy is a hitherto unknown factor in determining the sex of the child, says author Dr. Retnakaran. This novel insight could impact reproductive planning and our understanding of the basic mechanisms of gender in humans, the expert adds.

In difficult times, more girls are born than boys
Previous studies have already shown that stress (e.g. from wars or natural disasters) can have an impact on the proportion of boys and girls born, the scientists say. In such difficult times, more girls than boys would be born. Since our blood pressure is a key indicator of stress, the new study could provide an explanation for this effect. The normal gender ratio is 50:50. However, there is one factor that could produce some variation: male fetuses tend to die in the womb, explains Dr. Retnakaran.

Blood pressure affects the mother's physiology
This study either suggests that low blood pressure may indicate that the mother's physiology is less conducive to the survival of a male fetus. Or higher blood pressure before pregnancy is less conducive to the survival of a female fetus, the author says. Although the results of this study are very interesting, some experts remain skeptical about the results and further studies are required to find out the causes of the connection. (as)

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