These include abruption, where the placenta separates from the uterus wall, and the potentially life-threatening condition pre-eclampsia.

BBC: Miscarriage gene identified

Women with preeclampsia are more likely to have complications such as low birthweight, premature birth or placental abruption, where the placenta separates from the wall of the uterus before birth, according to the March of Dimes.

CNN: Eclampsia: 5 things you need to know