Igbo-Ora, the scientific enigma of the twin capital of the world'
Igbo-Ora, Nigeria has extraordinarily high twin birth rates of 45-50 per 1,000 deliveries, far exceeding the global average of 12 per 1,000, earning it the title of world's twin capital.
Scoliosis shows higher inheritance probability but lacks definitive genetic evidence, involving multiple environmental and genetic factors making it sporadic in nature.