Researchers warn planned C-section births — the most common surgery in the US — can increase risk of childhood cancers

Children born using planned Cesarean section procedures may have a heightened risk of developing certain childhood cancers, according to the researchers.

After studying the health of nearly 2.5 million children, members of the Swedish Karolinska Institutet found an increased risk of developing acute lymphoblastic leukemia during these events – and not in similar emergency “C-section” procedures.