It's an interesting, but little-known fact that the rate of twin births in West Africa is about four times higher than in the rest of the world. The centre of this twin zone is Igbo-Ora, a sleepy southwest town in Nigeria.
Igbo-Ora is a town in Oyo State, south-western Nigeria, situated 80 kilometres (50 mi) north of Lagos. In 2001 the population of the town was approximately 60,000 people. The unusually large number of twin births in the region have earned the town the nickname Twin Capital of the World.
This phenomenon of a large number of twin births is not unique to Igbo-Ora; it has also been observed in the town of Kodinji in India and Cândido Godói in Brasil. In Igbo-Ora, research has suggested that the multiple births could be related to the eating habits of the women in the region.[1] Though no direct relation between dietary intake and twin births has been proved, a research study carried out at the University of Lagos Teaching Hospital has suggested that a chemical found in Igbo-Ora women and the peelings of a widely consumed tuber (yams) could be responsible.
There is of course the possible explanation that the large number of twins being born here could simply be a matter of genetics.
Obviously yam is a staple in every Nigerian home, but yam is central to Yoruba people’s diet. We eat it boiled; fried, roasted, pounded, and dried yam is grounded to make amala.So can yam really be attributed to the high rate of twin births in the south-west? Many scientists believe so, and women trying to conceive in western parts of the world are desperately looking for yams in order to boost their chances of having twins.
Double pregnancies occur either when a fertilized egg is implanted in the uterine wall and develops into a zygote which splits into two embryos, in which case the offspring results in “identical twins;” or when two eggs are produced and fertilized and implanted in the uterine wall separately, in which case the offspring results in “fraternal” or “non-identical twins.”

Source: http://trevohealthreport..com/2015/07/eating-yam-and-intake-of-folic-acid.html

Need to check up on this facts with my Benue and Ondo friends.

Can someone educate me abt folic acid?

Chibuhealth:
Can someone educate me abt folic acid?

Folic acid helps to prevent neural tube defects in embryos. Meaning spinal cord problems in babies.
But it doesn't increase the chances of twinning. No no no.

Wow have you seen any evidence whatsoever.... Yam how is that possible.. But I know folic acid is good for pregnant women.

pls what is d recommended daily dosage of folic acid for a woman trying to conceive? Doctors in d house pls..