With access and the ability to monitor student well-being, school nurses can play a key role in identifying potential weight-related problems. Understanding the risk factors and signs associated with weight-related problems may increase the identification of an issue and the referral to appropriate resources for treatment. This chapter provides diagnostic criteria, symptoms, and informational resources for various weight-related problems. The chapter describes the common behavioral and physical signs of anorexia, bulimia, binge eating, and obesity. It compares the biological, psychological, and behavioral risk factors associated with anorexia, bulimia, binge eating, and obesity. The chapter describes the potential health consequences of anorexia, bulimia, binge eating, and obesity. The chapter helps the reader to identify resources for anorexia, bulimia, binge eating, and obesity where students and their families can learn more about these disorders and potential treatments.