Almost 60 percent of pregnant teens say they have used one or more substances in the past year, nearly double the rate of non-pregnant teens, researchers at the University of Texas at Austin have found.
Use of these substances continues during pregnancy, especially among younger teens, the study found. More than one-third of all pregnant teens ages 12 to 14 said they used one or more substances in the previous month, the Austin American-Statesman reports.
Pregnant teens were most likely to use alcohol (16 percent), followed by marijuana (14 percent) and other illicit drugs (5 percent). The findings are published in Addictive Behaviors. The researchers found pregnant teens were less likely to use drugs or alcohol once they moved into their second or third trimester.