The bizarrely high proportion of twins born to mothers in the remote Nigerian town of Igbo-Ora has baffled scientists for years.
In the local Yoruba culture twins are revered as a gift from the supreme god Olodumare - protected by spirits and possibly possessing of magical powers, while one local thinks there might be a "secret" behind the extraordinary number of twins.
YouTuber and adventurer visited the town that some have called "Twin Capital of the World" to speak to some of the people that live there about their hometown's unique distinction.
Even though the locals are clearly very friendly, and happy to greet their American visitor, Drew runs into an early obstacle: "Even though Nigeria is an English speaking country," he says, "it's actually very difficult to find English speakers. Usually the ones that go to school that are educated can speak. But here in the villages, they usually speak native language, which is Yoruba."
Eventually, he meet a local woman named Grace, who agreed to be his guide. She also gave him one possible explanation for the town's extraordinary number of twins.
"There's actually a secret behind that," she says. "There is a soup in our land here that people eat that will make them to give birth to twins and multiple [births]."
She explains that the local delicacy, made with okra leaves, is believed to be behind Igbo-Ora's unusual demographics.
Researchers have been unable, so far, to find any definitive link between the local date and the high proportion of multiple births, although a study undertaken at the University of Lagos Teaching Hospital has tentatively identified a chemical present in the peel of locally-grown yams as a possible cause.
Grace says she's proud to live in the town, because the presence of so much scientific research about the twins has made Igbo-Ora famous.
"Everybody's a twin here," she says. "There is no single house in this town that does not have a twins. Every house, no matter how small or how big the house is, they will surely have a set of twins."
The global average birth rate for twins is around 12 per 1,000 births, but in Igbo-Ora, it is at least 50 per 1,000.
Drew gamely tries the okra-leaf soup speculating that he might now be on his way to having twins.
The soup, called Ilasa, contains okra leaf, so-called "locust beans," and another herb called marugbo.
There's a regular twins festival in the town, with the local twins, triplets and in some cases quads wear matching outfits and pose for photos.
But despite its fame, Igbo-Ora is deeply impoverished, with one local telling Drew that the town is "financially handicapped" and in desperate need of support from international aid agencies.
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