What causes premature birth?
Premature birth is typically caused by “preterm labor,” and KidsHealth lists many causes of preterm delivery, which can range from “the mother’s lifestyle choices during pregnancy: smoking, drinking alcohol, using drugs, eating poorly, not gaining enough weight, and exposure to physical stress” to causes outside a mother’s control, such as hormonal imbalance, an abnormality of the uterus, a chronic illness, or an infection.