TY - CHAP M1 - Book, Section TI - Chapter 69. Morbidity A1 - Irwin Jr., Charles E. A2 - Rudolph, Colin D. A2 - Rudolph, Abraham M. A2 - Lister, George E. A2 - First, Lewis R. A2 - Gershon, Anne A. PY - 2011 T2 - Rudolph's Pediatrics, 22e AB - Risky health behaviors, rather than infectious or chronic diseases, are the leading causes of morbidity among adolescents.1-7 Most morbidity results from 3 risky behaviors initiated in early to middle adolescence: substance use, sexual activity, and motor/recreational vehicle use. These 3 behaviors tend to covary. For example, substance use plays a major role in motor vehicle crashes. Use of substances is associated with sexual behavior, often placing adolescents at risk for acquisition of sexually transmitted infections and unintended pregnancy.1 SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/03/29 UR - accesspediatrics.mhmedical.com/content.aspx?aid=6737026 ER -