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Eating disorders: What age at onset?

Umberto Volpe1, Alfonso Tortorella1, Mirko Manchia2

  • 1Department of Psychiatry, University of Naples SUN, Largo Madonna delle Grazie, 80138 Naples, Italy.

Psychiatry Research
|April 18, 2016
PubMed
Summary
This summary is machine-generated.

The age at onset for anorexia nervosa (AN) and bulimia nervosa (BN) eating disorders is typically around 18 years old. Most patients fall into the early onset category, highlighting the importance of defining age at onset for treatment planning.

Keywords:
Age at onsetEating disordersPrognosis

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Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Genetics

Background:

  • Eating disorders, including anorexia nervosa (AN) and bulimia nervosa (BN), are traditionally associated with adolescent onset.
  • Understanding the precise age at onset (AAO) is critical for effective treatment strategies and understanding disease trajectory.

Purpose of the Study:

  • To determine the age at onset (AAO) for individuals diagnosed with anorexia nervosa (AN) or bulimia nervosa (BN).
  • To analyze if there are significant differences in AAO between AN and BN patient cohorts.
  • To investigate the distribution of AAO within these eating disorder populations.

Main Methods:

  • Analysis of data from 806 subjects diagnosed with AN or BN.
  • Application of normal distribution admixture analysis to ascertain the age at onset for each subject.
  • Comparison of AAO distributions between AN and BN groups.

Main Results:

  • No significant differences were observed in the age at onset (AAO) functions between anorexia nervosa (AN) and bulimia nervosa (BN) subjects.
  • The mean AAO for both AN and BN groups was approximately 18 years.
  • A substantial majority of subjects, 75.3% with AN and 83.3% with BN, were classified within the early onset group.

Conclusions:

  • The age at onset (AAO) for anorexia nervosa and bulimia nervosa is consistently around 18 years, with most cases considered early onset.
  • The findings suggest a potential overlap in the developmental timing of these eating disorders.
  • Accurate definition and understanding of AAO for eating disorders (ED) are crucial for tailoring treatment modalities and considering patient history.