We, of course, vaguely imagine how youuseful this information, let's say, in the process. But we can not not share. We just do not have the right! After all, how many online discoveries are wonderful on the topic "what is there to give birth to a boy" and "how to properly paint your eyes to make a girl". There is even "where to put the Christmas tree to program the sex of the child." And we have everything here in science. The Canadian scientist Ravi Retnakaran is convinced: his research opens new prospects in family planning. Down with complex scientific calculations, popular on the Internet Japanese tables and other folk signs. Now it is enough for a woman to measure the pressure before sex to understand if she can conceive a child of the desired sex today, or it is better to unpack the next pack of condoms.
Photo:GettyImagesThe experiment, the results of which Retnakaran and his colleagues published in the authoritative American Journal of Hypertension, lasted seven years. More than 3,000 married women living in the city of Liuyang in China took part in it. Before proceeding directly to the process of conception, they agreed to undergo some tests. In particular, to donate blood and measure their blood pressure. Over these years, 1,411 babies were born in the "experimental" families. Of these, 739 were boys and 672 were girls. - Statistics show that the blood pressure of Chinese women who gave birth to boys before conception averaged 112.5 millimeters of mercury, and that of mothers of girls was 109.6 millimeters, - explains Retnakaran. - This means that blood pressure is also an important determining factor in "laying" the sex of the child. Scientists are not yet ready to answer why this happens. They only assume that this is related to the needs of the embryos. Boys supposedly need more energy to develop well. And the mother's increased blood pressure contributes to this. So, if you want a boy, drink coffee. Or (this is advice for future dads) ask your other half to get married - again or for the first time. In the near future, evolutionary biologists are going to test their hypothesis. And contrast it with the theory that due to negative social factors - natural disasters, wars, terrorism, economic problems - fewer boys are being born.
