Low fertility rates have traditionally been reported among women with viril
izing CAH, especially among those with the salt-wasting variant of this dis
order. Pregnancy experience in this population remains limited; however, re
cent data suggest that fertility rates are significantly improved because o
f earlier treatment, advances in surgical reconstruction, and improved comp
liance with therapy. This article reviews the reported pregnancy outcomes i
n women with CAH and discusses the importance of careful endocrine monitori
ng during gestation. Placental aromatase activity is the principal mechanis
m that protects the female fetus from the virilizing effects of maternal hy
perandrogenism. issues concerning preconception counseling and specific gui
delines for the management of pregnancy and delivery in these women are als
o discussed.