The Adolescent Health Check-up (J1), which takes place between the 11th and 15th birthday, is one of the most important preventive examinations. Within a span of 30 years (between the U9 examination at 5 years of age and the adult preventive check-up at 35 years), the J1 is the only preventive service covered by statutory health insurance. In addition to assessing the mental and physical development, discussions are held with the adolescent regarding issues related to alcohol, nicotine, and drug use.