title: Eating disorder symptoms and obesity at the intersections of gender, ethnicity, and sexual orientation in US high school students.
abstract: OBJECTIVE
  We examined purging for weight control, diet pill use, and obesity across sexual orientation identity and ethnicity groups.
  
  
  METHODS
  Anonymous survey data were analyzed from 24 591 high school students of diverse ethnicities in the federal Youth Risk Behavioral Surveillance System Survey in 2005 and 2007. Self-reported data were gathered on gender, ethnicity, sexual orientation identity, height, weight, and purging and diet pill use in the past 30 days. We used multivariable logistic regression to estimate odds of purging, diet pill use, and obesity associated with sexual orientation identity in gender-stratified models and examined for the presence of interactions between ethnicity and sexual orientation.
  
  
  RESULTS
  Lesbian, gay, and bisexual (LGB) identity was associated with substantially elevated odds of purging and diet pill use in both girls and boys (odds ratios [OR] range = 1.9-6.8). Bisexual girls and boys were also at elevated odds of obesity compared to same-gender heterosexuals (OR = 2.3 and 2.1, respectively).
  
  
  CONCLUSIONS
  Interventions to reduce eating disorders and obesity that are appropriate for LGB youths of diverse ethnicities are urgently needed.
authors.affiliation: Division of Adolescent and Young Adult Medicine at Boston Children's Hospital, Boston, MA 02115, USA. bryn.austin@childrens.harvard.edu
authors.forename: S Bryn
authors.initials: SB
authors.lastname: Austin
authors.forename: Lauren A
authors.initials: LA
authors.lastname: Nelson
authors.forename: Michelle A
authors.initials: MA
authors.lastname: Birkett
authors.forename: Jerel P
authors.initials: JP
authors.lastname: Calzo
authors.forename: Bethany
authors.initials: B
authors.lastname: Everett
mesh_terms: D000293:Adolescent; D040343:Behavioral Risk Factor Surveillance System; D005006:Ethnicity; D001068:Feeding and Eating Disorders / Q000453:epidemiology*; D005260:Female; D005783:Gender Identity; D006801:Humans; D016015:Logistic Models; D008297:Male; D008913:Minority Groups; D009765:Obesity / Q000453:epidemiology*; D016017:Odds Ratio; D012574:Schools / Q000706:statistics & numerical data*; D057566:Self Report; D012725:Sexual Behavior; D014481:United States / Q000453:epidemiology