As adolescents transition through the developmental stage of 12 to 18 years, they experience significant physical, emotional, and social changes. During this period, many adolescents begin to establish their identity, explore new relationships, and become more independent. This multifaceted development can be shaped by various factors, including family dynamics, peer relationships, and cultural influences. One crucial aspect of health promotion during this stage is understanding the common health risks that adolescents face.

Please fill in the blank with the appropriate term: The leading cause of death among adolescents aged 12-18 years is __________.