There are a handful of medical conditions of habits of the mother that are risk factors for placental insufficiency. These include:
- High blood pressure
- Medical conditions that increase the chances of blood clots
- Cigarette smoking
- Certain medications
In addition, abnormally shaped placentas or placentas that have not grown big enough (particularly in cases of a multiple pregnancy) can be causes of placental insufficiency. This condition can also be caused by a placenta that does not attach to the surface of the uterus correctly, or if the placenta breaks away from the uterine surface and bleeds.