This book explains the rationale for changes in the DSM-5 (R) related to incorporating behavioral addictions alongside substance use disorders; it also illuminates the significance of including the construct of behavioral addictions in this widely used psychiatric diagnostic manual. The chapters herien describe eight behaviors often considered addictions, including gambling disorder, internet gaming disorder, internet addiction, food addiction, hypersexuality, shopping addiction, exercise addiction, and tanning addiction. Also examined are prevalence rates in epidemiological samples, risk factors, and promising treatment approaches. The result is an easy-to-use resource and guide for clinicians, students, and researchers.