Rates of teen pregnancy are higher in the U.S. than in other countries, in part because adolescents in the U.S. are less likely to use contraception.^[1] Hormonal methods of birth control (such as the pill) and barrier methods (such as condoms) can reduce the risk of pregnancy,^[2] and condom use with every sexual act can greatly reduce—though not eliminate—the risk of STDs.^[3] Condom and contraceptive use among adolescents has increased since the 1990s, but many adolescents are inconsistent users: of those who had sex in the past month, almost one in four males and almost four in ten females did not use a condom. ^[4]