More and more women are choosing to have their babies by C-section.
New research published in the British Medical Journal* shows use of the procedure has risen 67 percent since 1991.
Medical experts say it's partly due to convenience. Having a C-section gives mothers more control over their birth schedule.
The procedure is most popular with older women having their first child but it's growing rapidly among women under 30.
However, doctors warn about serious potential side effects.