But as the rate of delivery complications from VBAC (including uterine rupture) increased, attempts at VBAC decreased, although there are some benefits to avoiding repeated cesarean sections.

CNN: Is it OK to have a VBAC?

Many women who have had cesarean sections inquire about the possibility of attempting a vaginal birth after C-section (VBAC), sometimes also called trial of labor after C-section (TOLAC).

CNN: Is it OK to have a VBAC?

Some doctors prefer to perform cesarean sections in such cases.

CNN: STORY HIGHLIGHTS

We can't fully explain this, although we know that the age of the mother and health issues like obesity play a role, as do high rates of elective cesarean sections.

CNN: Why are moms in America lagging?