Final answer:
Asymmetric intrauterine growth restriction (IUGR) can be caused by placental insufficiency or maternal undernutrition, leading to slower growth on one side of the body compared to the other.
Step-by-step explanation:
Asymmetric intrauterine growth restriction (IUGR) can be caused by various factors such as maternal, fetal, or placental issues. One of the main causes is placental insufficiency, which refers to a problem with the placenta that results in inadequate transfer of oxygen and nutrients to the fetus. This leads to slower growth on one side of the body compared to the other. Another possible cause of asymmetric IUGR is maternal undernutrition, which can result in low birth weight and developmental delays.