When she was just 5-years-old, Lina Medina (born on 23 September, 1933) was brought by her parents to a hospital, who complained of extreme abdominal growth. After being examined by a doctor, a shocking truth was discovered - Lina was seven-months pregnant. Apparently, Lina was born with a rare condition called 'precocious puberty', which, simply put, is the early onset of sexual development. Lina Medina then officially became the youngest documented mother in medical history. She gave birth to a boy on May 14, 1939, by a cesarean section, as her pelvis was too small. The child born was completely healthy and was named Gerardo. However, the father of the child remained a mystery.