Почему человеческие роды так болезненны?

Humans are funny mammals. On top of everything else, we walk strangely (on two legs) and have curiously large brains. We give birth to large children with active and highly developed brains, but with poorly developed bodies.

Virtually all women experience pain in childbirth, and childbirth takes much longer than other mammals. For example, in a 1999 New Mexico State University study by Leah Albers of 2,500 full-term babies, primiparous mothers labored on average for almost nine hours. By comparison, monkeys usually give birth within two hours.

Read this article on estet-portal.com in this article.

Thus, compared to animals, human babies are born at an earlier stage of development, before their bodies are sufficiently developed to start walking.

Medicated treatment of postpartum haemorrhage

My default image

It is believed that this strange mixture of two main adaptive strategies – an active brain with an inept body –
the result of evolution
because our extraordinarily large brain and our peculiar bipedal mode of locomotion

make contradictory demands. This explanation is called the obstetrical dilemma. 

The essence of the obstetric dilemma: how the brain and upright posture are connected According to the obstetrical hypothesis, we need a wide pelvis to have children with big brains,

but narrow

to

effectively walk

or run. The compromise between these opposing needs is to bear the child for as long as possible. This will allow the brain to develop, but the head must be able to pass through the birth canal. Critical periods in a woman's life: postpartum and menopause However, studies show that walking problems are just as common in women with wider pelvises as in women with narrower pelvises. And children in women with a narrow pelvis are not born at an earlier rock than in women with a wide one. Therefore, the obstetric theory is shattered by this evidence. Energy Hypothesis: why the birth – it hurts

The second hypothesis explaining the pain of childbirth is called energetic. After all, the main task of the mother is to provide the metabolic needs of the growing child. It is believed that childbirth occurs when the fetus begins to starve.

If earlier, probably, human childbirth was fairly painless, then evolution has not played in our favor. The conditions of life and nutrition have improved, and the fetus was able to stay in the womb for a longer time without experiencing energy deficiency.   

 
And naturally the question arises why the female pelvis does not expand to facilitate childbirth.  Because the best – the enemy of the good.

One time caesarean section – always caesarean section: is it true?

My default image

The mechanism of delivery is optimal for the reproduction of the human race, and in confirmation of this, the 7 billion human population.

Read the most interesting articles in

Telegram!

Evolutionary adaptation doesn't have to be perfect, good enough.

Perhaps the female pelvis has adapted to the size of the human fetal brain, which has also increased over the course of evolution. Or perhaps simple economy keeps the pelvis close to the brain size of a newborn. More useful and interesting information on our channel on YouTube

:

 

Add a comment

captcha

RefreshRefresh