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Bulimia

New Research Suggests Lowering Threshold for Bulimia Diagnosis

Strategic Insights

— 1 min read

Researchers at Western University conducted a study to investigate the validity of the current Diagnostic and Statistical Manual of Mental Disorders (DSM) threshold for diagnosing bulimia nervosa (BN) and its variants. The study recruited 344 women who met the DSM-5 criteria for BN, other specified feeding or eating disorder-BN (OSFED-BN), or had no lifetime eating disorder symptoms. The women completed assessments of their height, weight, weight history, body fat percentage, and structured clinical interviews for DSM-5 disorders, among other questionnaires.

Key Takeaways:

  • The study found that the current DSM-5 threshold for diagnosing BN and its variants produced few differences relative to comparisons of these diagnostic groups and non-eating disorder controls.
  • The researchers concluded that lowering the current minimum frequency thresholds for diagnosing BN may be necessary.
  • The study highlighted the need to examine the validity of the threshold that distinguishes BN from other specified feeding or eating disorders (OSFED).
  • The researchers used a large sample of women (N = 344) who met the DSM-5 criteria for BN or OSFED-BN.
  • The study found that more than 80% of individuals with OSFED-BN met or exceeded frequency and duration criteria for inappropriate compensatory behaviors.
  • The researchers compared the frequency of binge eating among individuals with BN and OSFED-BN.
  • The study suggested that BN, BN in partial remission, and OSFED-BN may represent a single condition that captures some dimensional differences in severity.

Statistics:

  • 344 women participated in the study
  • 153 women met the DSM-5 criteria for BN
  • 118 women met the DSM-5 criteria for OSFED-BN
  • 78 women had no lifetime eating disorder symptoms
  • More than 80% (96 individuals) of those with OSFED-BN met or exceeded frequency and duration criteria for inappropriate compensatory behaviors
  • The study used a sample of women (N = 344) who completed assessments of their height, weight, weight history, and body fat percentage
  • The researchers conducted structured clinical interviews for DSM-5 disorders and used self-report questionnaires covering validators related to eating disorders, psychological traits, and general psychopathology

Sources:

  • NewsRx. Researchers at Western University Target Bulimia (Clinical Significance and Distinctiveness of DSM-5 Other Specified Feeding or Eating Disorder-Bulimia Nervosa of Low Frequency and/or Limited Duration in Women). Mental Health Weekly Digest. November 3, 2025; p 672.
  • Clinical Significance and Distinctiveness of DSM-5 Other Specified Feeding or Eating Disorder-Bulimia Nervosa of Low Frequency and/or Limited Duration in Women. International Journal of Eating Disorders, 2025.

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