What Are the Causes of Premature Labor?
When a woman goes into labor, she starts having uterine contractions, the amniotic sac ruptures and birth is imminent. Since normal human gestation lasts between 37 to 42 weeks, the start of labor before the 37th week of pregnancy is considered to be premature labor, or preterm labor. In some cases, premature labor can be halted using medical means, but it often proceeds to birth, resulting in a premature baby. Premature labor before the 34th week of pregnancy is especially dangerous, according to Baby Center.
