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Summary 1.6 Normal or Abnormal: Problem 5
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Summary of the literature, videos, tutorials and exercises for Problem 5 of course 1.6 Normal or Abnormal
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PROBLEM 5: YOU ARE WHAT YOU EATLearning Goals:
Case 1:
What eating disorders exist and what are their features? (DSM / epidemiology/ clinical prognosis)
Can you diagnose an eating disorder based solely on weight/BMI?
Case 2:
What theories can explain the origin of eating disorders?
Are the aetiological theories the same for the different eating disorders?
Case 3:
Which therapies are used to treat eating disorders, and which are effective?
Is mirror exposure an effective treatment for eating disorders, and if so, for which disorder?
Eating Disorder
Characterised by
- Persistent disturbance in eating behaviour
ANOREXIA NERVOSA
• Lack of appetite induced by nervousness
• Intense fear of gaining weight or becoming fat combined with behaviours that result in a
significantly low body weight
CRITERIA
1. Restriction of energy intake relative to requirements, leaning to low body weight in the
context of age, sex, developmental trajectory and physical health. Significantly low weight
is weight that is less than minimally normal for children, adolescents less than that
minimally expected
2. Intense fear of gaining weight or becoming fat. Persistent behaviour that interferes with
weight gain even though at significantly low weight
3. Disturbance in the way in which ones body weight or shape is experienced, undue influence
of body weight of shape of self-evaluation, or persistent lack of recognition of the
seriousness of the current low body weight.
Change from DSM-4 – DSM-5
- Amenorrhea (cessation of menstruation) no longer required for a person to be given
the diagnosis
o Women who continue to menstruate but meet all the other diagnostic criteria for
anorexia nervosa are similar psychologically to women who have amenorrhea and
have ceased menstruating
o Can’t be used for males
, o Can’t be assessed in prepubescent girls or women who use hormonal
contraceptives
Centuries old
- Extreme fasting that were signs of anorexia can be found in early religious literature
- First medical account = 1689
Some people may feel fulfilled by their weight loss
Others make efforts to conceal their thinness by wearing baggy clothes or carrying hidden objects so
that they weigh more when measured by others
2 types
Difference: the way in which patients maintain their low weight
1. Restricting: limit the quantity of food consumed
o Caloric intake is controlled
o Avoid eating in presence of others
o Eat slow, cut it in small pieces, or dispose of it secretly
2. Binge-eating:
o Binge: out of control consumption of food that is far greater than what most people
would eat
o Purge: efforts to remove it from the body (vomiting, laxatives, diuretics, enemas)
§ Excessive exercise
§ Fasting
Distorted values of eating disorders
- Restricting type of anorexia: greatly admired by others with eating disorders
- Hallmark of truly successful person with anorexia nervosa was death from starvation
BULIMIA NERVOSA
• Characterized by uncontrollable binge eating and efforts to prevent resulting weight gain by
using inappropriate behaviours (self-induced vomiting, excessive exercise)
• Recent diagnosis
• Usually normal weight (slightly overweight)
CRITERIA
1. Recurrent episodes of binge eating
- Eating in discrete period of time, an amount of food that is definitely larger than what
most individuals would eat in a similar period of time under similar circumstances
- A sense of lack of control over eating during the episode
2. Recurrent inappropriate, compensatory behaviours in order to prevent weight gain
- Self- inducing vomiting
- Misuse of laxatives
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