Pregnancy is a life-threatening condition. Women die from being pregnant. We have known that for thousands of years.
They die from hemorrhage, infection, pre-eclampsia (which can lead to fatal seizures), obstructed labor, amniotic fluid embolism, thromboembolism, a ruptured uterus, retained placenta, hydatidiform mole, choriocarcinoma and many other causes that fill the obstetrics textbooks. Modern medicine can prevent and treat many, but not all, of these conditions. Some potentially fatal problems cannot be foreseen or prevented. Pregnancy always comes with some irreducible risk of death.
Read more at The New York Times.