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Related Experiment Video

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Control of Eating Behavior Using a Novel Feedback System
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Interoceptive awareness in anorexia nervosa.

Andrea Phillipou1, Susan L Rossell2, David J Castle3

  • 1Centre for Mental Health, Swinburne University of Technology, Melbourne, Victoria, Australia; Department of Mental Health, St Vincent's Hospital, Melbourne, Victoria, Australia; Department of Mental Health, Austin Health, Melbourne, Victoria, Australia.

Journal of Psychiatric Research
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Interoceptive awareness, the body

Keywords:
BiologicalEating disorderInteroceptionRecoverySistersTrait

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Area of Science:

  • Neuroscience
  • Psychology
  • Eating Disorders Research

Background:

  • Interoceptive awareness, the sense of the body's internal state, is crucial for regulating physiological needs.
  • Individuals with anorexia nervosa (AN) often exhibit altered responses to hunger cues, suggesting potential interoceptive deficits.
  • Limited research has specifically investigated interoceptive awareness across different stages and familial contexts of AN.

Purpose of the Study:

  • To examine interoceptive awareness levels in individuals with current AN, weight-restored AN, and their first-degree relatives.
  • To compare self-reported interoceptive awareness using the Multidimensional Assessment of Interoceptive Awareness (MAIA) across diagnostic groups and healthy controls.

Main Methods:

  • Eighty participants were assessed: current AN (c-AN), weight-restored AN (wr-AN), AN sisters (AN-sis), and healthy controls (HC).
  • The Multidimensional Assessment of Interoceptive Awareness (MAIA) was used to measure self-reported interoceptive awareness.
  • Statistical analyses compared MAIA subscale scores across the four groups.

Main Results:

  • Significant group differences were observed in noticing, not-distracting, self-regulation, and trusting subscales of the MAIA.
  • Weight-restored AN and AN sisters showed higher 'noticing' scores than controls; current AN and weight-restored AN had lower 'not-distracting' scores.
  • Current AN participants exhibited lower self-regulation and trusting scores compared to other groups.

Conclusions:

  • Altered interoceptive awareness, including heightened body sensation awareness and reduced self-trust, may be linked to AN symptomatology.
  • These interoceptive differences might represent trait factors contributing to the risk and maintenance of anorexia nervosa.
  • Findings highlight the importance of assessing specific facets of interoceptive awareness in AN research and clinical practice.