Igbo-Ora: Why does the twin capital of the world have so many twins?

Igbo-Ora is one of the most extraordinary discoveries in Nigeria. While Europe boasts of about 16 twins for every 1,000 births and the United States about 33 for every 1,000 births, statistics from a study by British gynaecologist, Patrick Nylander, between 1972 and 1982, recorded an average of 45 to 50 sets of twins per 1000 live births in the southwest.

The town, a small 80 kilometers from Lagos, is a sleepy town in Oyo state with a simple way of life, made up of mostly farmers and traders. It is considered the Twin capital of the world, and has the stone plinth that boasts of it.

Because more twins are born in Igbo-Ora than anywhere else in the world, walking through the town might make you feel like you are seeing double. Almost every house has at least one set of twins.