Dhaka, May 7 -- Tucked away in Kerala's Malappuram district, the quiet village of Kodinhi appears like any other rural settlement at first sight. But a closer look reveals an unusual pattern that has long fascinated visitors and researchers alike - an unusually high number of twins.

Over the years, Kodinhi has gained global recognition as India's "Twin Town", where nearly 20 percent of the population are twins. In a country that generally records one of the lowest twin birth rates in the world, the village stands out as a rare demographic mystery.

The village has recently returned to online attention following a widely circulated advertising campaign by e-commerce platform Flipkart. The campaign creatively builds on Kodinhi's identity, ...