Pamela K Keel1. 1. Department of Psychology, Florida State University, Tallahassee, Florida, USA.
Abstract
PURPOSE OF REVIEW: The present review aims to help specialists remain up-to-date on research from the past 2 years on epidemiology, risk factors, biological correlates, treatment, and outcomes for purging disorder, a DSM-5 other specified feeding and eating disorder. RECENT FINDINGS: Purging disorder affects 2.5-4.8% of adolescent females in population-based samples, but purging disorder remains relatively rare in treatment settings. Higher premorbid body mass index, body dissatisfaction, and dieting prospectively predict purging disorder onset. In studies of biological correlates, women with purging disorder demonstrated significantly greater postprandial increases in the satiety peptide, peptide tyrosine tyrosine, compared to women with bulimia nervosa and controls, and these differences predicted greater gastrointestinal distress in purging disorder. Less than half of those with purging disorder are free from an eating disorder at the end of treatment and at one or more years of follow-up, supporting the need for improved interventions. SUMMARY: Purging disorder may occupy a space that falls between anorexia and bulimia nervosa, making it 'not quite' anorexia and 'not quite' bulimia and difficult to reliably distinguish from each. Improved recognition and understanding of purging disorder requires more research specifically designed to test models of risk and maintenance factors to advance interventions for those who purge without binge eating.
PURPOSE OF REVIEW: The present review aims to help specialists remain up-to-date on research from the past 2 years on epidemiology, risk factors, biological correlates, treatment, and outcomes for purging disorder, a DSM-5 other specified feeding and eating disorder. RECENT FINDINGS:Purging disorder affects 2.5-4.8% of adolescent females in population-based samples, but purging disorder remains relatively rare in treatment settings. Higher premorbid body mass index, body dissatisfaction, and dieting prospectively predict purging disorder onset. In studies of biological correlates, women with purging disorder demonstrated significantly greater postprandial increases in the satiety peptide, peptide tyrosine tyrosine, compared to women with bulimia nervosa and controls, and these differences predicted greater gastrointestinal distress in purging disorder. Less than half of those with purging disorder are free from an eating disorder at the end of treatment and at one or more years of follow-up, supporting the need for improved interventions. SUMMARY:Purging disorder may occupy a space that falls between anorexia and bulimia nervosa, making it 'not quite' anorexia and 'not quite' bulimia and difficult to reliably distinguish from each. Improved recognition and understanding of purging disorder requires more research specifically designed to test models of risk and maintenance factors to advance interventions for those who purge without binge eating.
Authors: Melissa A Munn-Chernoff; Pamela K Keel; Kelly L Klump; Julia D Grant; Kathleen K Bucholz; Pamela A F Madden; Andrew C Heath; Alexis E Duncan Journal: Int J Eat Disord Date: 2015-03-25 Impact factor: 4.861
Authors: Christopher G Fairburn; Zafra Cooper; Helen A Doll; Marianne E O'Connor; Kristin Bohn; Deborah M Hawker; Jackie A Wales; Robert L Palmer Journal: Am J Psychiatry Date: 2008-12-15 Impact factor: 18.112
Authors: S A Wonderlich; C B Peterson; R D Crosby; T L Smith; M H Klein; J E Mitchell; S J Crow Journal: Psychol Med Date: 2013-05-23 Impact factor: 7.723
Authors: Amanda M Dossat; Lindsay P Bodell; Diana L Williams; Lisa A Eckel; Pamela K Keel Journal: Int J Eat Disord Date: 2014-03-04 Impact factor: 4.861
Authors: Katherine Schaumberg; Erin E Reilly; Sasha Gorrell; Cheri A Levinson; Nicholas R Farrell; Tiffany A Brown; Kathryn M Smith; Lauren M Schaefer; Jamal H Essayli; Ann F Haynos; Lisa M Anderson Journal: Clin Psychol Rev Date: 2020-11-11