title: Developmental trajectories of disordered eating from early adolescence to young adulthood: a longitudinal study.
abstract: OBJECTIVE
  Research examining changes in eating disorder symptoms across adolescence suggests an increase in disordered eating from early to late adolescence. However, relevant studies have largely been cross-sectional in nature and most have not examined the changes in the attitudinal symptoms of eating disorders (e.g., weight concerns). This longitudinal study aimed to address gaps in the available data by examining the developmental trajectories of disordered eating in females from preadolescence into young adulthood.
  
  
  METHODS
  Participants were 745 same-sex female twins from the Minnesota Twin Family Study. Disordered eating was assessed using the Total Score, Body Dissatisfaction subscale, Weight Preoccupation subscale, and a combined Binge Eating and Compensatory Behavior subscale from the Minnesota Eating Behavior Survey assessed at the ages of 11, 14, 18, 21, and 25. Several latent growth models were fit to the data to identify the trajectory that most accurately captures the changes in disordered eating symptoms from 11 to 25 years.
  
  
  RESULTS
  The best-fitting models for overall levels of disordered eating, body dissatisfaction, and weight preoccupation showed an increase in from 11 through 25 years. In contrast, bulimic behaviors increased to age of 18 and then stabilized to age of 25.
  
  
  CONCLUSIONS
  The findings expanded upon extant research by investigating longitudinal, symptom specific, within-person changes and showing an increase in cognitive symptoms into young adulthood and the stability of disordered eating behaviors past late adolescence.
authors.affiliation: VISN 4 Mental Illness Research, Education, and Clinical Center (MIRECC), VA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania; Department of Psychiatry, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
authors.forename: Jennifer D
authors.initials: JD
authors.lastname: Slane
authors.forename: Kelly L
authors.initials: KL
authors.lastname: Klump
authors.forename: Matthew
authors.initials: M
authors.lastname: McGue
authors.forename: William G
authors.initials: WG
authors.lastname: Iacono
mesh_terms: D000293:Adolescent; D000367:Age Factors; D056912:Binge-Eating Disorder / Q000523:psychology*; D001828:Body Image / Q000523:psychology; D001835:Body Weight; D052018:Bulimia Nervosa / Q000523:psychology*; D002648:Child; D005247:Feeding Behavior / Q000523:psychology; D005260:Female; D006128:Growth / Q000502:physiology; D006801:Humans; D008137:Longitudinal Studies; D008910:Minnesota; D010549:Personal Satisfaction; D055815:Young Adult
keywords: developmental; disordered eating; growth curve; longitudinal