What complication is most commonly associated with twin pregnancies?

Maternal anemia is indeed a common complication associated with twin pregnancies. The presence of two fetuses increases the demand for maternal blood volume and nutrients. This elevated demand can lead to a reduction in the available hemoglobin and iron levels, as the mother's body works to supply sufficient nutrients and oxygen to both developing babies. Consequently, the risks of anemia are heightened in twin pregnancies, making it a prevalent concern for healthcare providers monitoring such pregnancies.

While other complications like gestational diabetes, preeclampsia, and intrauterine growth restriction can also occur in twin pregnancies, maternal anemia particularly stands out because it is directly related to the increased physiological burden placed on the mother when carrying more than one fetus. Monitoring for anemia is critical to ensure both the mother's and the babies' health throughout the pregnancy.