Bookmark Kaumudi Online  Bookmark this site  Editor@Kaumudi  |  Marketing  Print Advt rates  |  Calendar 2012        Go!    
 
 
October 18, Wednesday 2017 12:45 PM       

       HEADLINES: CPM prefers Modi to congress: Antony                                              Amit Shah to join 'Janaraksha Yatra' on its last day in Thiruvananthapuram                                              A V Unnikrishnan Namboodiri new Sabarimala melshanthi                                              Scooter rider dies after being run over by lorry                                              Gold worth Rs. 29 lakh seized at Nedumbassery                                              MLA’s house sealed over unpaid loan                                              Taj Mahal built by blood, sweat of Indian labourers: Yogi Adityanath                                              BJP is India's richest party, Congress ranks second, says report                                              Time for Ayurveda-led 'health revolution': Modi                                              Nuclear war may break out at any time: N Korea                                              Panama Papers journo Caruana Galizia killed by Malta car bomb                                              Suicide bombers, gunmen kill 47 in attacks on Afghan forces                                              China to speed up construction of power project in PoK                                              India unlikely to play any 'four-day' Tests in near future                                              It feels like home playing in India: Tim Weah                                              Kumble turns 47, cricket fraternity tweets heartfelt bday wishes                                              Kaumudi Facebook
       WEIRDNEWS Next Article: Cyberbullied teen commits suicide in front of family  
       Caesarean births impacting human evolution: study
 
         Posted on :19:04:10 Dec 6, 2016
   
A A
       Last edited on:19:04:10 Dec 6, 2016
         Tags: Caesarean births impacting human evolution: s
 
LONDON: Regular use of caesarean sections to deliver babies is affecting the human evolution, according to a new study.
 
An increasing number of mothers now need surgery to deliver a baby due to their narrow pelvis size, researchers said.
 
They estimate cases where the baby cannot fit down the birth canal have increased from 30 in 1,000 in the 1960s to 36 in 1,000 births today.
 
Historically, these genes would not have been passed from mother to child as both would have died in labour.
 
According to Dr Philipp Mitteroecker from the University of Vienna in Austria, there is a long standing question in the understanding of human evolution.
 
"Why is the rate of birth problems, in particular what we call fetopelvic disproportion - basically that the baby does not fit through the maternal birth canal - why is this rate so high?" he said.
 
"Without modern medical intervention such problems often were lethal and this is, from an evolutionary perspective, selection.
 
"Women with a very narrow pelvis would not have survived birth 100 years ago. They do now and pass on their genes encoding for a narrow pelvis to their daughters," said Mitteroecker.
 
It has been a long standing evolutionary question why the human pelvis has not grown wider over the years.
 
The head of a human baby is large compared with other primates, meaning animals such as chimps can give birth relatively easily, 'BBC News' reported.
 
Researchers devised a mathematical model using data from the World Health Organisation (WHO) and other large birth studies.
 
They found opposing evolutionary forces. One is a trend towards larger newborns, which are more healthy.
 
However, if they grow too large, they get stuck during labour, which historically would have proved disastrous for mother and baby, and their genes would not be passed on.
 
"One side of this selective force - namely the trend towards smaller babies - has vanished due to caesarean sections," said Mitteroecker.
A A
       WEIRDNEWS
Next Article: Cyberbullied teen commits suicide in front of family
 
 
WEIRDNEWS HEADLINES
Bipasha Basu turns down offer to endorse aerated drink!  
Vampires may have been real people with a blood disorder  
When sex robots helped creator spice up his marriage  
Lord Ganesha issued admit card by a Bihar university  
Karnataka: Infants placed on hot coals as part of religious ritual  
Sex robot Samantha breaks down after being molested tech enthusiasts  
Owl feathers may inspire quieter aircraft, turbines  
'Honest' thieves return booty with a piece of advice  
Chhattisgarh: July 1-born girl named 'GST'  
Playing video games makes you a better university student!  
UP minister's guard carries gun during MRI scan, ruins machine  
Saddam tries to get Aadhar card for Bin Laden  
Aussie senator breastfeeds in Parliament  
Pet dogs may help cut stress in kids: study  
Rats, it's now hic hic time in Udaipur!  
Rats drinking alcohol: Bihar police  
Fruit Juice Floods Russian Town After Factory Roof Collapses  
Veg dishes irk groom, bride finds another man  
Book reveals why Jinnah shaved off his moustache  
Treatment-resistant 'HIV reservoir' cells identified  
Kidnapping, forced marriage: Pakistan's Hindu women hope for protection  
Dogs can adopt human perspective to find food: study  
Legal spat in US over parents wanting to name child "Allah"  
Chimp filmed cleaning dead son's teeth for first time  
Mediterranean diet may improve sperm quality: study  
 
Did Janaraksha yatra create road traffic blocks in Thiruvananthapuram city?
yes
 
no
 
don't know
 
 
 
Home Kerala India World Business Sports Sci&Tech Education Automobile CityNews Movies Environment Letters 
© Copyright keralakaumudi Online 2011  |  Reproduction in whole or in part without written permission is prohibited.
Head Office Address: Kaumudi Buildings, Pettah P.O, Trivandrum - 695024, India.
Online queries talk to Deepu Sasidharan, + 91 98472 38959 or Email deepu[at]kaumudi.com
Customer Service -Advertisement Disclaimer Statement   |  Copyright Policy