Has practicing cesarean really affected the "evolution" of our species?

Practicing cesareas is something that the Romans already did, although with a practically null survival of the mother.In fact, the Lex Caesarea indicated that this operation should be done to the pregnant woman who had died in the last months of her pregnancy, in order to save the child's life.

But since 1950 practicing caesareas has become something very everyday, which may have influenced our evolution in some way.

Has practicing cesarean really affected the "evolution" of our species?

"Pariras with pain" was the punishment that God imposed on Eve to expel her from paradise, and so it has been since the beginning of time, especially since "Eva" could walk on both her legs and stopped doing it on all fours; walking upright was perfect to start running and maintain balance, but also the pelvis progressively narrowed , which affected the birth and generated a condition called “photopelvic disproportion”, that humans are more prone to suffer that other primates.

Has practicing cesarean really affected the

Demonstration of horizontal and vertical caesarea in" The Birth of Venus ", by W.-A.Bouguereau

What does this mean? That the head of a human baby is designed to pass just through the mother's pelvic duct, and if her head is rather large, and the maternal hips narrow, the thing can get complicated, as in fact has happened.

Natural childbirth, like this, became a natural selection , and before practicing successful cesarean, babies and mothers died if this disproportion occurred-or any other type of risky situation-From there arose the "obstetric dilemma": who to save, the child or the mother.With caesarean this dilemma exists less and less, because both lives are saved.And the maternal hips remain narrow, and the babies are bigger.

Has practicing cesarean really affected the

According to Philipp Mitterocker, an evolutionary biologist at the University of Vienna, practicing caesareas changed the natal survival rate, and when the selection pressures change is when we evolve .With caesarean sections, photopelvic disproportion has increased by approximately 3.66% in recent decades, which for him is a possible indicator of an evolutionary change, since despite the fact that women have narrow hips, births are successful, even with “big-headed” babies.And what is the advantage of a bigger head? Bigger brains, greater thinking ability, greater intelligence; Of course, there is no irrefutable evidence of what he says, "It is only a prediction, it has not yet been empirically proven."

In part, it is because the data on the practice of cesarean are confusing; it could not be known, without a more thorough study, how many of the caesarean sections practiced in the world are due to photopelvic disproportion or for any other reason.p>

Has practicing cesarean really affected the

However, there are some indicative clues that we are actually experiencing a possible evolutionary transformation: apparently, our skulls are larger than those of people 150 years ago, and the average weight at birth is also superior.Of course all this can be the result of better nutrition and better health care.In any case, "the selection of babies of greater size is limited by the metabolic capacity of the mother", since successfully ending a pregnancy of very large babies is undoubtedly a dur or work for women.

And stay with us reading something else, unexpected changes during pregnancy and things that babies can do that we didn't know.

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