According to the U.S. Centres for Disease Control and Prevention, babies born to teenage mothers may have a weaker intellectual development and medical as well as behavioural issues as they grow up. Here are some of the effects of teenage pregnancy. Teenage pregnancy impacts both mother and baby. Pregnant teen suffers emotional crisis after positive pregnancy test. The emotional crisis may lead to rash behaviour like suicide. A teenage mother can overlook neonatal care completely. Teenage pregnancy is a serious medical issue that influences the future of woman. All teen pregnancies are dangerous because every teen lacks the skills that are needs to handle oodles of stress that pregnancy brings along. Not only does a teen pregnancy impact the mother, it may also impact the baby.