Her parents - Tiburrello Medina and Victoria Losia - noticed Lina’s stomach growing after she complained about abdomen pains, and initially doctors believed she was suffering from a large tumour.
But the truth was even more frightening and bizarre.
The doctor explained that Lina was seven months pregnant
Just weeks later on May 14, 1939, Lina gave birth to a baby boy via a c-section, as her young pelvis was too small for a natural birth.
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At five years, seven months, and 21 days of age, she became the youngest known person to ever give birth.
She named her baby Gerardo, after the doctor who delivered him. Gerardo was born a healthy 6lbs and would go on to live until he was 40 years old.
When Gerardo was born, the doctor discovered that despite Lina only being five years old, she had mature sexual organs and suffered from a condition called precocious puberty.
According to the Mayo Clinic, precocious puberty is when a child’s body begins changing into that of an adult (puberty) too soon. Puberty that begins before age 8 in girls and before age 9 in boys is considered precocious puberty.