Eating Disorders

Eating Disorders Study Notes

Module Overview

  • Topics of Focus:

    • Identification of reference documents for diagnosing eating disorders

    • Characteristics of specific eating disorders: anorexia nervosa, bulimia nervosa, binge eating disorder

    • Subtypes of anorexia nervosa and bulimia nervosa

    • Categories of Other Specified Feeding or Eating Disorder (OSFED) and their descriptions

    • Risk factors influencing disordered eating behavior

    • Societal and familial influences contributing to eating disorders

    • Health complications associated with various eating disorders

    • Multidisciplinary treatment approaches for eating disorders

Learning Objectives

  • Understand and articulate the diagnostic criteria for various eating disorders

  • Recognize and describe the different subtypes of anorexia nervosa and bulimia nervosa

  • Differentiate the categories of OSFED

  • Identify risk factors that contribute to disordered eating

  • Analyze societal and family influences that heighten the risk of developing eating disorders

  • Discuss the health complications of eating disorders

  • Explore the treatment strategies used in the management of eating disorders

Key Terms

  • Anorexia Nervosa: An eating disorder characterized by refusal to maintain a minimally normal weight, intense fear of gaining weight, and distorted body image.

  • Bulimia Nervosa: An eating disorder involving recurrent episodes of binge eating followed by inappropriate compensatory behaviors such as purging.

  • Binge Eating Disorder: Defined by eating large quantities of food in a discrete period and a lack of control over eating.

  • Other Specified Feeding or Eating Disorder (OSFED): Disorders that do not meet the criteria for other specific eating disorders but still cause significant distress.

  • Unspecified Feeding or Eating Disorder: Similar to OSFED but lacks specific criteria for diagnosis.

  • Orthorexia: An unhealthy obsession with eating foods considered pure or healthy.

  • Body Dysmorphia Disorder: A condition where the individual is preoccupied with a perceived flaw in physical appearance.

  • Muscle Dysmorphia: A form of body dysmorphia characterized by an obsession with increasing muscle mass.

  • Body Image: The subjective picture or mental image of one's own body.

  • Body Dissatisfaction: A negative evaluation of one's body size and shape.

  • Female Athlete Triad: A condition involving disordered eating, amenorrhea, and osteoporosis.

  • Anabolic-Androgenic Steroids: Synthetic substances related to male sex hormones that are used to enhance muscle mass.

Disordered Eating Overview

  • Definition: A range of eating behaviors that can lead from less severe habits to clinically diagnosable eating disorders.

  • Examples of Clinically Diagnosed Disorders:

    • Anorexia Nervosa

    • Bulimia Nervosa

  • Examples of Disordered Behaviors:

    • Unhealthy eating patterns

    • Compensatory habits like purging, excessive exercise, or fasting.

  • Symptoms: Can range from extreme and evident to mild and less obvious.

Continuum of Disordered Eating

  • Healthy Eating: Eating when hungry, stopping when full, showing no concern about body size.

  • Disordered Eating: Increasing preoccupation with weight and body image, leading to unhealthy patterns.

  • Examples of Conditions on the Continuum:

    • Normal Eating

    • Anorexia Nervosa

    • Bulimia Nervosa

    • Binge Eating Disorder

    • Muscle Dysmorphia

    • Compulsive exercise.

Defining Eating Disorders

  • Diagnostic Criteria:

    • Assessment must be performed by a qualified professional (physician or psychologist).

    • Criteria for diagnosis are specified in the DSM-V, including anorexia nervosa, bulimia nervosa, binge eating disorder, OSFED, and unspecified feeding or eating disorder.

Anorexia Nervosa

  • Definition: A refusal to maintain body weight at or above a minimally normal weight for age and height.

  • Characteristics:

    • Intense fear of gaining weight or becoming fat

    • Generally underweight

    • Distorted body image

    • Possible occurrence of amenorrhea.

  • Subtypes:

    • Restricting type

    • Binge-eating/purging type

  • Medical Complications:

    • Range from mild to severe complications such as heart failure and multiple organ failure.

    • Mortality rate ranging from 5-20% among patients.

Bulimia Nervosa

  • Criteria for Diagnosis:

    • Eating large amounts of food in short periods (binging)

    • Feelings of loss of control during the binge.

    • Bingeing is followed by inappropriate behaviors (e.g., purging, excessive exercise).

    • Individuals are often at a normal weight or overweight.

  • Subtypes:

    • Purging Bulimia (use of laxatives/vomiting)

    • Non-Purging Bulimia (excessive exercise or dieting)

  • Medical Complications:

    • Includes stomach rupture, heart failure due to electrolyte imbalance, irregular menstrual cycles, clinical depression, and high risk of suicidal behavior.

Binge Eating Disorder

  • Definition: Eating an amount of food larger than most would eat in a similar time under similar circumstances, with a sense of lack of control.

  • Prevalence: Estimated at 1-2% in general populations, often higher among obese individuals.

  • Medical Complications:

    • Associated with obesity, leading to problems such as high cholesterol, cardiovascular disease, type 2 diabetes, and joint issues.

Other Specified Feeding or Eating Disorder (OSFED)

  • Definition: A classification for eating disorder patterns that cause significant distress but do not meet full criteria for another diagnosis.

  • Examples:

    • Atypical anorexia nervosa (at or above normal weight)

    • Bulimia nervosa of low frequency (<1 episode/week, <3 months)

    • Binge eating disorder of low frequency and/or duration.

    • Purging disorder (no binging involved)

    • Night eating syndrome (eating excessively after waking).

Body Image and Its Impact

  • Body Dissatisfaction: A major risk factor for developing disordered eating behavior. This involves how individuals perceive their body and their feelings towards their appearance, often leading to negative self-worth.

  • Muscle Dysmorphia: Type of body dysmorphia focused on muscularity, often referred to as "bigorexia."

Influence of Family and Society

  • Family Influence: Characteristics like lack of individuality, overprotectiveness, and poor communication correlate with increased risk of eating disorders.

  • Cultural Pressures: Societal portrayal of the ideal body image influences personal self-esteem and may lead to dissatisfaction, perpetuating disordered eating behaviors across genders.

Treatment for Eating Disorders

  • Multidisciplinary Treatment Approaches:

    • Individual therapy, group therapy, family therapy, cognitive/behavioral therapy, nutrition counseling.

  • Intuitive Eating: A paradigm designed to foster a healthy relationship with food. The principles include honoring hunger, making peace with food, and respecting fullness to nurture a positive food experience rather than focusing on weight loss.

Risk Factors for Disordered Eating

  • Dieting: Can lead to anxiety, depression, and impaired growth in youth.

  • Teasing: Associated with poor body image and subsequent eating disturbances.

  • Puberty: Changes during adolescence can negatively influence body image perceptions, especially for those who mature early or late.

Conclusion

  • Awareness and early intervention are critical, as physical appearance might not always indicate the presence of an eating disorder. Seeking professional help should be prioritized if disordered eating patterns are suspected.

  • Resources available include NEDA and local counseling services targeted at eating disorders.