One of the leading causes of death among teenagers is suicide. The Centers for Disease Control reports that it is the third-leading cause of death in the United States for young people between the ages of 15 and 24. Only accidents and homicides account for more deaths for this age group. Even more alarming is the fact that suicide is the fourth-leading cause of death for children between 10 and 14 years old, according to teensuicidestastics.com.