Kodinhi, Kerala– high birth rate of twins in the world

Twins village,Kodhini, Kerala,India. Indiablogspot.com
Twins occur about once in every ninety live births and the exact rate varies  globally coupled with ethnicity and heritage. The highest rate of twinning  could be due to the following reasons:
High estrogen levels cause more ova to mature and be released due to dietary habits  as caused by consumption  of excess yam in the diet. 

Identical twins, technically known as mono zygotic, are formed from the fusion of one sperm and one ovum. This one fertilized egg, for unknown reasons, splits  into  two identical halves  which  develop separately into identical babies. Physically, they are the mirror reflections of each other and are always of the same sex.
 Fraternal twins or dizygotic twins are the result of fusion of two ova from one ovary or both ovaries  with  two sperms. The children may look similar or just as different as other normal ones. High incidence of  twin  birth rates in  particular place for a long period of time, is altogether, a different matter of medical wonder. It needs  special attention and research work.
Kodinhi, Kerala. Bioskop-21.info
Kodinhi, Kerala. Wikimapia
Kodinhi ( about 35 km south of Calicut), a small tropical village in Mallapuram  district of the southern Indian state – Kerala  is internationally  known  to have the highest birth rate of twins, though India is one among the countries that have low  birth rate of twins. Baffled doctors and researchers  are working  hard to unravel  the mystery  of a  small, remote village  which  accounts  for almost  six times as many  twins born  more  than the  global  average. Can you imagine that this  small  village – Kodinhi is proud to have 220 sets of twins born  to just  2000 families. Majority of them are Sunni Muslims  who  normally  follow  the  Shafi school of thought.

Dr. Krishnan Sribiju, who is researching on the Kodinhi twins for sometime, believes the real  number   will be be far higher- between  300 and  350 twins  within  the village boundaries.
Kodinhi  has,surprisingly,  45  twin births for every 1000 births whereas the national  and also Asian rate  of  twin births is roughly  4 out of 1000 births. It is also noted that  twins are born  to  more  mature  women, who are normally over 5 feet and three inches in height. The majority of  twins in  Kodinhi are identical twins of same sex.

Kodhini,Twins village,Kerala,India. purplepeoples.com

In  the  past  five years  alone, it is observed, that up to 60 pairs  of twins  have  been  born - with the rate of twins increasing year by  year and  in the past ten years the number  of  twins  in  Kodinhi has, for unknown reason  doubled. 

Researchers  have  yet  to come  up  with  a  possible, acceptable  biomedical  theory for this strange phenomenon that  occurs  only  in  this  village  and  not  in  surrounding villages, not even in fringe villages bordering  this village.

Yet another  matter of interest is villagers  allege that the twin phenomenon is not a recent one and  has  been  occurring since 1949. That, both  men  and  women marrying outsiders – from other villages  still  report  high incidence  of  birth  of twins, has surprised the researchers and is more of a riddle
that has remained unsolved. 

Igbo-Ora in Nigeria  is  yet  another  place  which has  the highest  rate  of  twin  births  in  the  whole  world. As per a study  conducted  by  an  English  Gynecologist, Patrick Nylander,  an average of 45 to 50 pairs of twins per 1000 live births were recorded  during 1972  and 1982 in Igbo-Ora. Researchers believe  eating habit plays a major role in the birth of twins here. However, in the case of Kodinhi, people here  and  other  parts  of  Kerala  have similar food habits. So, comparison can not be made based on dietary habits.

Candidi Godoi, Brazil, Latin America  has a large number of twin births. In  the  case  of  Kerala village, the  enigma  is  yet to be solved. May be an offshoot of this mystic world!!

                               (modified: 28th Feb. 2015)