Eating Disorders Flashcards
anorexia nervosa - DSM
pretence preoccupation with what is put into their body
restriction of energy intake relative to requirements, leading to significantly low body weight (for age, sex, height)
how is anorexia nervosa assessed
using BMI charts
mild anorexia BMI
> 17
moderate anorexia BMI
16- 17
severe anorexia BMI
15-16
extreme anorexia BMI
<15
what are the symptoms of anorexia nervosa
intense fear of weight gain or becoming overweight
behaviour which interferes with weight gain despite being underweight
distorted self image
lack of recognition of seriousness of the low weight
subtypes of anorexia
restricting
binge-purging
anorexia - restricting
dieting to limit calorie intake
anorexia - binging/purging
purging to limit calorie intake
includes compensatory behaviours (excessive exercises, laxatives etc)
anorexia and body image distortions
overestimate their weight more than other people
anorexia and thigh circumference distortion
overestimated by 30%
prevalence of anorexia nervosa
~1%
anorexia nervosa and sex differences
10x more common in females
anorexia nervosa and age of onset
adolescence
- critical period for brain development where people are gaining independence
anorexia nervosa and mortality rate
highest of any psych disorder
outcomes from restrictive eating
anaemia
bone and muscle loss
hair loss
lanugo
infertility (menstrual cycle shuts down)
kidney problem
electrolyte imbalance
arrhythmias
suicide
criteria of bulimia nervosa
- recurrent episodes of binge eating
- recurrent inappropriate compensatory behaviours to prevent potential weight gain
- at least 1x a week, for 3 months
- self evaluation is unduly influenced by body image
- not better explained by anorexia nervosa
binge eating episodes explained
eating amount of food larger than most would eat in similar time-period, and circumstances
sense of lack of control over eating
compensatory behaviours explained
vomiting
diuretics/laxatives
fasting
excess exercise
lifetime prevalence of bulimia nervosa
~1-2%
bulimia nervosa and sex differences
90% of patients are females
bulimia nervosa and age of onset
adolescence