From the Lancet 2003; 362: 1779-84:
Stillbirth linked to cesarean section
Investigating the relationship between previous cesarean delivery and subsequent stillbirth.
Cesarean section can increase the risk of stillbirth in subsequent pregnancies, claim researchers, in findings that add to the growing debate over the acceptability of elective cesareans.
Professor Gordon Smith (
The increased risk of stillbirths with unknown causes began at around week 34 of the pregnancy in women who had undergone a cesarean for a previous birth, regardless of the reason for the procedure.
The association is "biologically plausible," the team comments, reasoning that previous cesarean delivery may influence uterine blood flow and mechanisms of placentation in future pregnancies.