C-Sections Causing Evolutionary Changes

Posted: Dec 6 2016, 6:04am CST | by , in News | Latest Science News

 

C-Sections Causing Evolutionary Changes
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  • Cesarean Births May be Impacting Human Evolution
 

Apparently, cesarean sections could be leading to several evolutionary transformations. Especially the gap between the size of the female pelvis and the newborn’s dimensions could be altered as a result of C-sections.

Females find it painful to give birth. Of course, evolution chose smaller pelvic size as compared to the size of the newborn infants. The experts point towards the rise in C-sections being performed throughout the world.

This may be making this already pre-existent gap even larger. The regular use of C-sections has caused a 10% to 20% increase in difference between the female pelvic width and the baby’s size, according to USHealthNews

Evolution does not end so easily. It is still occurring in today’s society in its relentless pace. Yet the female pelvis has retained its smaller size relative to the size of the baby.

The size of the baby’s head and shouders are not only close to but may in fact exceed the mother’s birth canal. This is a far cry from what you see in most mammals.

Although labor contractions are painful for most mammals, the lengthy labor seen in humans makes giving birth to a human baby more of an ordeal. Even the apes, which happen to be our closest cousins, have it easier. 

Some theories claim that human females require tinier pelvises in order to walk on two feet. Yet the proof for this theory is at best non-existent. A model was created by the researchers that showed how evolution favored larger babies in order to ensure their survival.

Not only do they survive very well, but these larger babies also tend to contract fewer diseases. C-section births were also brought into the limelight for study.

These births have actually been around for hundreds of years. They are not something new. The only difference is that in the past they were performed on dying mothers in order to save their children. 

There is even a historic rumor that Julius Caesar was given birth this way, although it may not have any truth to it. There is controversial data regarding the actual need of C-sections.

The only problem is that the risks involved for both mother and baby via C-section are too much. Even the child’s immune system may get compromised for life thanks to a C-section.

The child normally picks up some helpful bacteria along with its delivery from the birth canal. Yet in case of a C-section, no such thing occurs.

The fear is that in the future, due to larger-sized babies, every baby will have to be delivered via C-section. This may not turn out to be true but it is still a highly likely scenario. 

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<a href="/latest_stories/all/all/20" rel="author">Sumayah Aamir</a>
Sumayah Aamir (Google+) has deep experience in analyzing the latest trends.

 

 

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