A large-scale Swedish study, recently published in the International Journal of Cancer, has revealed a link between planned Caesarean sections and an increased risk of certain types of leukaemia in children, compared to those born vaginally.

According to the study’s findings, which analysed data from 2.5 million children born in Sweden during two periods (1982-1989 and 1999-2015), approximately 1,495 cases of leukaemia were recorded among the children included. Of these, 15.5% were born via C-section, categorised as either planned or emergency.

The risk of certain types of leukaemia was found to be higher in children born by planned C-section compared to vaginal birth. This increased risk was more pronounced in boys than in girls, and in younger children. The association was not clearly observed in emergency C-sections.

Experts suggest that a potential reason for this link is the lack of exposure to the stresses of natural birth or to beneficial bacteria in the birth canal, which may affect the development of the immune system.

These results pave the way for further research into the long-term effects of planned C-sections on child health. However, it’s crucial to note that this study does not necessarily imply that C-sections pose a direct risk; many factors still require in-depth investigation.