title: An assessment of daily food intake in participants with anorexia nervosa in the natural environment.
abstract: OBJECTIVE
  To examine the caloric intake in women with anorexia nervosa (AN) and how it varies by day as a function of the presence or absence of binge eating and/or purging behaviors.
  
  
  METHODS
  Female participants with AN (n = 84, mean age = 24.4, range 18-51) were recruited from three different sites. Data on food intake were obtained through the use of 24-h dietary recall using the Nutritional Data Systems for Research, and data on binge eating and purging behaviors were collected on palmtop computers using an ecological momentary assessment paradigm. Daily macronutrient intake was compared on days during which binge eating and/or purging behaviors did or did not occur.
  
  
  RESULTS
  On days during which binge eating and purging behaviors both occurred, participants reported significantly greater kilocalorie intake when compared with days when neither behavior occurred, or when only binge eating or purging occurred. Binge eating episodes were only modest in size on days when purging did not occur. Energy intake overall was higher than expected.
  
  
  CONCLUSIONS
  Intake on days where binge eating occurred varied dramatically based on whether or not purging occurred. Whether markedly increased binge eating intake was causally related to purging is unclear. Nonetheless eating episodes were at times quite large and equivalent to those reported by participants with bulimia nervosa in other research.
authors.affiliation: Department of Clinical Neuroscience, University of North Dakota School of Medicine and Health Sciences, Fargo, North Dakota, USA.
authors.forename: Carlye
authors.initials: C
authors.lastname: Burd
authors.forename: James E
authors.initials: JE
authors.lastname: Mitchell
authors.forename: Ross D
authors.initials: RD
authors.lastname: Crosby
authors.forename: Scott G
authors.initials: SG
authors.lastname: Engel
authors.forename: Stephen A
authors.initials: SA
authors.lastname: Wonderlich
authors.forename: Chad
authors.initials: C
authors.lastname: Lystad
authors.forename: Daniel
authors.initials: D
authors.lastname: Le Grange
authors.forename: Carol B
authors.initials: CB
authors.lastname: Peterson
authors.forename: Scott
authors.initials: S
authors.lastname: Crow
mesh_terms: D000293:Adolescent; D000328:Adult; D000856:Anorexia Nervosa / Q000523:psychology*; D002032:Bulimia / Q000175:diagnosis* / Q000453:epidemiology / Q000523:psychology; D004435:Eating / Q000502:physiology* / Q000523:psychology; D002149:Energy Intake / Q000502:physiology*; D005260:Female; D005508:Food Deprivation; D006801:Humans; D011939:Mental Recall; D008875:Middle Aged; D015596:Nutrition Assessment; D014839:Vomiting / Q000175:diagnosis* / Q000453:epidemiology / Q000523:psychology; D055815:Young Adult