An 18-year-old woman was compelled to undergo a caesarean section after doctors warned her not to push because the size of her baby could end up breaking her pelvis. Breanna Sykes from Perth, Australia was ‘shell-shocked’ after she gave birth to a baby boy weighing nearly six kilograms on Saturday.

Sykes’ son, Ziad, who weighed 5.9 kgs at birth, is now one of the heaviest babies ever delivered in Western Australia, reports Perth Now. The average weight of a newborn baby is just over three kilograms, according to the Australian Bureau of Statistics. Several doctors from all over Joondalup Health Campus where Ziad was delivered had flocked to catch a glimpse of the big baby.

However, doctors have assured Sykes that her chubby newborn is ‘perfectly healthy’ and explained that his exceptional size may be a result of genetics. Earlier her doctors had estimated Ziad’s weight to be just over four kilograms but then decided to put her under anaesthetics after she suffered an anxiety attack due to the severity of her contractions. A boy who weighed 10.2 kg and was born to Sig. Carmelina Fedele in Aversa, Italy in September 1955 holds the Guinness world record for the heaviest baby at birth.