Eating disorders 1 Flashcards
balance between hunger and satiety =
homeostasis
what are the internal causes of hunger and satiety?
genetics
learning
social learning
what are the external causes of hunger and satiety?
social pressures
food industry
toxic environment
a persistent disturbance of eating behaviour or behaviour intended to control weight, which significantly impairs physical health/psychological functioning =
eating disorder
only ___% of cases are underweight as majority of people with eating disorders are not identifiable by being skinny
15
BMI =
weight (Kg) / Height in m2
what is the healthy range of BMI?
19-25 (varies with factors such as ethnicity)
why is BMI not a very meaningful measure for young people?
young people are growing over time so we use expected weight for height and this is adjusted for age
what is the BMI of someone overweight?
over 25
what is the BMI for an obese person?
over 30
why do athletes have a higher BMI?
muscle weighs more than fat
persistent restriction of energy intake leading to significantly low body weight, intense fear of gaining weight, disturbance in body experience =
anorexia nervosa
what are the subtypes of anorexia?
restricting
binge-eating/purging
which is the worst subtype of anorexia?
binge-eating > more worried about suicide
explain the critical thoughts of why weight is not a definite indicator of anorexia
some people have naturally low BMI and don’t put on weight easily despite eating lots, ballerinas encouraged to be underweight (social sanctioning), lots of variation, BMI needs to be adjusted for specific ethnic groups, most cases won’t show extreme weight loss at the start, might be starvation for other reasons
recurrent episodes of binge eating of eating more in a short period than people would normally in a similar period =
Bulimia nervosa
what are some of the recurrent inappropriate behaviours in order to prevent weight gain (bulimia)?
self induced vomiting misuse of laxatives diuretics other medications fasting excessive exercise
how many times does binges and behaviours have to occur for the diagnostic criteria of bulimia?
1 x a week for 3 months = DSM-5
DSM-4 = 2 x a week
recurrent episodes of over eating, sense of lack of control, eat more rapidly and large amounts when not hungry, eating alone, feelings of disgust/depression/guilt =
binge eating disorder
does binge eating disorder have any purging or compensatory behaviours?
no
which disorder is the most common?
binge eating disorder
how often does binge eating disorder have to occur in the diagnostic criteria?
1 x a week for 3 months