 Stillborn and newborn deaths are 50% higher for teen moms than women aged 20–29, and are more likely to have a low birth weight.Teenage birth rates, as opposed to pregnancies, peaked in 1991, when there were 61.8 births per 1,000 teens, and the rate dropped in 17 of the 19 years that followed.One in four American women who had sex during their teenage years will have a baby before they are married, compared to only one in ten who wait until they are older.