Eating Disorders Flashcards

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1
Q

Eating disorders

A
  • Persistent disturbance in eating behavior.
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2
Q

Anorexia nervosa

A
  • Lack of appetite induced by nervousness.
  • Intense fear of gaining weight combined with behaviors that result in a significantly low body weight.
  • Purging vs restrictive type = the way they maintain their very low weight.
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3
Q

Anorexia nervosa: Restricting type

A
  • Efforts to limit the quantity of food consumed. Calorie intake controlled, avoidance of eating in front of others, eating excessively slow or cut their food into small pieces/dispose their food.
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4
Q

Anorexia nervosa: Purging/binge-eating type

A
  • Either binge, purge, or binge and purge.
  • Binge: out-of-control consumption of food, might be followed by activities that remove the food eaten.
  • Purge: ways to remove food from the body, self-induced vomiting, laxatives etc. Exercise/fasting is not purging.
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5
Q

Bulimia nervosa

A
  • Uncontrollable binge eating and efforts to prevent resulting in weight gain by using purging techniques.
  • Normal weight or slight overweight.
  • Begins with restricted eating motivated by desire to be slim. Then, gradually erodes and starts eating ‘forbidden foods’. This is followed by purging.
  • Average binge is 4800 calories.
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6
Q

Binge eating disorder

A
  • After a binge, the person does not engage in any form of inappropriate behaviors.
  • Less dietary restrain.
    -Associated with being overweight or even obese.
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7
Q

Age of onset

A
  • Anorexia: starts at 7 but usually develops at 15-19 years.
  • Bulimia: 20-24 years.
  • Binge eating: 30-50 years.
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8
Q

Gender differences

A
  • 3:1 women vs men.
  • Gender bias in the DSM-5.
  • Homosexual men have higher rates of eating disorders than heterosexual men.
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9
Q

Prevalence

A
  • Anorexia: 1%
  • Bulimia: 0.9%
  • Binge-eating: 2%
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10
Q

Medical complication: Anorexia

A
  • Highest mortality rate.
  • 3% die from the consequences of self-imposed starvation.
    Body complications:
  • Hair thinks and brittles
  • Blood: anemia and others
  • Muscles and joints: weak muscles, swollen joints, fractures, osteoporosis.
  • Kidney stones and failure.
  • Low potassium, magnesium and sodium
  • Constipation, bloating.
  • Bruise easily, dry skin, growth of fine hair, cold easily, yellow skin, nails brittle.
  • Low blood pressure, slow heart rate, heart failure.
  • Period stops, bone loss, trouble getting pregnant, miscarriage, post partum depression.
  • Brain and nerves: bad memory, fainting, changed brain chemistry, cant think straight etc.
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11
Q

Medical complications: Bulimia

A
  • Less lethal
    Body effects:
  • Electrolyte imbalances and low potassium from purging = risk for heart abnormalities.
  • Damage to the heart muscles may be due to using ipecac syrup (vomiting)
  • Tears to the throat may occur or calluses on the hands due to self vomiting.
  • Teeth damage also occurs damage the contents of the stomach is acidic (brushing after is worse).
  • Swollen parotid (saliva) glands caused by vomiting
  • Small red dots around your eyes due to pressure of vomiting.
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12
Q

Course and outcomes

A
  • Suicide
  • Recovery is still possible: 52.1% for anorexia, 70% for bulimia, and high rates for binge-eating.
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13
Q

Diagnostic crossover

A
  • Bidirectional transition between the two types of anorexia is common.
  • Binge/purge anorexia and bulimia is common
  • Binge eating and bulimia is common
  • No cases of binge eating and anorexia
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14
Q

Comorbidity

A
  • Depression: 68% anorexia, 63% bulimia, 50% binge eating.
  • OCD found with bulimia and anorexia.
  • Substance use with bulimia, anorexia (not restricting type)
  • Personality disorders are also co-morbid. Restrictive type = anxious-avoidant, binge/purge = borderline personality disorder.
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15
Q

Culture

A
  • Anorexia = all over the world.
  • Culture influences disorder’s clinical manifestation.
  • Bulimia = people with exposure to western ideals about thinness, access to large amounts of food and who can purge in private.
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16
Q

Biological factors

A
  • Abnormality in the hypothalamus - VMH for satiety, LH for hunger
  • Damage to frontal/temporal = anorexia/bulimia
  • Temporal - body image
  • Frontal - monitoring pleasantness of smells and taste.
  • Set point theories: hunger impulse to get back to set point in bulimia and binge.
  • Serotonin: low levels (modulate appetite and feeding behavior)
17
Q

Sociocultural factors

A
  • Magazines, social media
18
Q

Family influences

A
  • Dysfunction/poor communication
  • Desired thinness from family
19
Q

Individual risk factors

A
20
Q

Treatment: Anorexia nervosa

A
  • Chronic and pessimistic about recovery. High dropout rate from therepy, reluctant to treatment.
  • Immediate concern: restore body weight, successful short term.
21
Q

Treatment (anorexia): Medication

A
  • Antidepressants: no evidence of effectiveness.
  • Antipsychotic drugs: olanzapine might be beneficial, helps with distorted thinking and side effect is weight gain.
22
Q

Treatment (anorexia): Family therapy

A
  • Preferred treatment
  • Does not blame child/parents = maudsley model
  • 10-20 sessions spaced over 6-12 months and has 3 phases:
    1. Re-feeding
    2. New patterns of relationships with food: once weight has gained
    3. Termination phase: relationship with patient and parents.
  • Effective for those not suffering from anorexia for more than 3 years.
23
Q

Treatment for bulimia: medication

A
  • Antidepressants
  • Positive response seen within 3 weeks.
  • If no early improvements - no further benefit from medication.
24
Q

Treatment for bulimia: CBT

A
  • Leading treatment
  • Focus (behavioral): normalizing eating patterns, meal plan, nutritional education, ending purging/binging.
  • Focus (cognitive): changing congitions/behaviors that initiate binge cycle, challenging dysfunctional thought patterns.
  • Effective for 30-50% of cases.
25
Q

Treatment for binge-eating:

A
  • Antidepressants
  • Appetite supprants: suppresses hunger + stabilizes mood
  • Anticonvulsants: reduces seizures + appetite and hunger.
  • Sibutramine: inhibits re-uptake of serotonin and norepinephrine, reduces frequency of binges and associated with weight loss.
  • Intrapersonal psychotherapy: effective, drop out rate 7%
  • CBT: self-help books, drop out rates 30%.
26
Q

Article: selective visual attention for ugly and beautiful body parts in eating disorders

A

Background:
- Body exposure to treat bad body feelings.
- Little known about the cognitive effects of body exposure.

Aim + method:
- Eye movement registration (electroculography) as index of visual attention while eating.
- Exposed to their own body and to control bodies.

Results:
- Low focus on their ‘beautiful’ body parts whereas their ‘ugly’ body parts was given priority in the symptomatic pp.
- Self-serving cognitive bias found in normal pp: focus on own beauty parts and less on ugly parts.
- When viewing other bodies, opposite was found: symptomatic = beauty parts, normals = ugly parts.