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Updated: Jul 26, 2026
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Using the Activity-based Anorexia Rodent Model to Study the Neurobiological Basis of Anorexia Nervosa
Published on: October 22, 2015
Laparophobia: a cognitive perspective on appetite control in anorexia nervosa
1Howard University, Washington, DC, USA. myslobom@intra.nimh.nih.gov
Summary
Anorexia nervosa (AN) involves cognitive factors like fat-phobia, driving restrictive dieting. Understanding these top-down processes may reveal new therapeutic targets for AN.
Area of Science:
- Neuroscience
- Psychiatry
- Eating Disorders Research
Background:
- Anorexia nervosa (AN) is linked to cognitive abnormalities, but their role in maintaining restrictive dieting is under-explored.
- Existing research has not fully addressed the cognitive mechanisms driving fear of weight gain and body image distortion in AN.
Purpose of the Study:
- To highlight cognitive ('top-down') factors contributing to anticipatory anxiety of stoutness and fat-phobia (laparophobia) in anorexia nervosa.
- To propose a cognitive model explaining the development and maintenance of AN, focusing on phobic avoidance and reward-driven behaviors.
Main Methods:
- Review and synthesis of existing research on cognitive factors in anorexia nervosa.
- Development of a novel cognitive model integrating phobia, avoidant tendencies, and coping strategies.
Main Results:
- A cognitive model is proposed where phobia of over-eating is superimposed on avoidant tendencies, with excessive exercising as a coping mechanism for fat-phobia.
- AN ideation involves complex neuronal circuits and neurochemical components potentially mirroring those in obesity.
Conclusions:
- Cognitive factors, particularly fat-phobia, play a crucial role in maintaining restrictive dieting in AN.
- Aberrant membrane excitability and phobic ideation suggest potential therapeutic benefits from drugs targeting gamma-aminobutyric acid and N-methyl-D-aspartate/AMPA receptors as adjuncts to conventional AN treatments.
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