lecture 6 eating disorders

what 3 body parts help with eating regulation

hypothalamus, hindbrain and corticolimbic systems

what does the hypothalamus do

regulates feeling of hunger/fullness

drives eating behaviour

what does hindbrain do

coordinates eating and digestion

senses fullness

what do corticolimbic systems do

plan and coordinate eating behaviour

drawing on emotional, memory and reward-based information

diagaram of physiological regulation

spectrm of eating behaviour

from intuitive eating based on body cues to sub-clinical disordered eating to clinical eating disorders i.e AN and BN

what are eating disorders

characterised by abnormal eating and weight-contrl behaviours

include disturbed attitudes towards weight, body shape and eating

impairs physical health and disrupts psychosocial functioning

4 main EDs

anorexia nervosa, bulimia nervosa, binge eating disorder, OSFED

AN criteria

1. lower enery intake and significantly low body weight

2. intense fear of weight gain

3. body weight disturbance and uses body weight to evaluate self worth

4. doesnt recognize seriousness of current body weight

two AN sybtypes

1. restricting AN = no recurrent binge-eating or purging in last 3 months

2. binge-purging AN= recurrent binge-eating and purging in last 3 months

BMI severity specifiers for AN

1. Mild less than 17

2. Moderate 16-16.9

3. Severe 15-15.9

4. Extreme less than 15 

minnesota stavration experiment

induced 25% weight loss amongst males with average body weight and no previous EDs, participants were conscientious objectors to war

minnesota starvation experiment observations -psychological changes

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