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Related Concept Videos

Binge Eating Disorders01:23

Binge Eating Disorders

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Binge eating disorder is a significant mental health condition characterized by recurrent episodes of excessive food consumption within a short period, accompanied by a perceived loss of control over eating behavior. Unlike occasional overeating, binge eating disorder is marked by distressing emotions such as guilt, shame, and anxiety following binge episodes. The disorder affects individuals across different ages and backgrounds, with profound implications for physical and psychological...
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Bulimia Nervosa01:30

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Bulimia nervosa is a complex and severe eating disorder characterized by a cyclical pattern of binge-and-purge eating pattern. It generally involves an episode of binge eating, followed by compensatory behaviors such as vomiting, excessive exercise, laxative use, or fasting, to prevent weight gain. Despite often maintaining a normal weight, individuals with bulimia are intensely preoccupied with their body image and harbor an overwhelming fear of gaining weight. This can contribute to the...
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Anorexia nervosa is a complex and severe eating disorder characterized by an intense fear of weight gain, an unrelenting pursuit of thinness, and a distorted body image. It often leads to dangerously low body weight relative to an individual's age and height. This disorder is marked by significant physical and psychological consequences, making it one of the most life-threatening psychiatric illnesses.
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Epigenetic Regulation01:37

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Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
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Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
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A Computer-Based Platform for Aiding Clinicians in Eating Disorder Analysis and Diagnosis
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Eating Disorders and Epigenetics.

Lea Thaler1,2, Howard Steiger3,4

  • 1Eating Disorders Continuum, Douglas Institute, Montreal West Island Integrated University Health and Social Services Centre, 6875 LaSalle Blvd, Verdun, QC, Canada, H4H 1R3. lea.thaler@douglas.mcgill.ca.

Advances in Experimental Medicine and Biology
|May 20, 2017
PubMed
Summary

Genetic and epigenetic factors contribute to eating disorders (EDs). Epigenetic mechanisms, influenced by environmental factors like stress and malnutrition, offer valuable insights into ED development.

Keywords:
AnorexiaBinge eatingBulimiaEating disordersEpigeneticsMethylation

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Area of Science:

  • Genetics and Epigenetics
  • Psychiatry
  • Developmental Psychology

Background:

  • Eating disorders (EDs) involve preoccupation with weight and maladaptive eating.
  • Genetic predispositions are activated by environmental factors.
  • Epigenetic mechanisms are hypothesized to link environmental exposures to gene expression in EDs.

Purpose of the Study:

  • To provide an overview of genetic factors in ED etiology.
  • To explore the hypothesis that epigenetic mechanisms link environmental stresses to EDs.
  • To summarize the current literature on epigenetics and EDs.

Main Methods:

  • Review of genetic factors in eating disorder etiology.
  • Examination of the hypothesis linking epigenetic mechanisms to environmental exposures (e.g., obstetric complications, childhood abuse, malnutrition) and EDs.
  • Summary of existing research on epigenetics in anorexia nervosa and bulimia nervosa, focusing on DNA methylation studies.

Main Results:

  • Genetic factors play a role in the etiology of eating disorders.
  • Emerging evidence suggests epigenetic mechanisms mediate the effects of environmental exposures on ED development.
  • Studies on DNA methylation in anorexia and bulimia provide initial support for the epigenetics hypothesis.

Conclusions:

  • An epigenetically informed perspective enhances the understanding of eating disorder development.
  • Epigenetics offers a crucial link between environmental factors and the genetic basis of EDs.
  • Further research into epigenetic modifications is vital for understanding and potentially treating EDs.