Anorexia nervosa By Mr Daniel Hansson Anorexia nervosa
Anorexia nervosa By Mr Daniel Hansson
Anorexia nervosa u u u Symptoms Prevalence Etiology Evaluation Conclusion
Symptoms (DSM-IV-TR( Behavioural symptoms: Will not maintain normal weight for their age and height, 85 % of an appropriate weight Emotional symptoms: Extremely fearful of gaining weight or being fat, even the person is already underweight Cognitive symptoms: Has a distorted view of body shape and weight Somatic symptoms: A female that misses three menstrual cycles in a row
Prevalence Lifetime prevalence of Anorexia nervosa in females is 0. 5% u 10 times more likely in females than in males u Onset age is usually between ages 14 -18 u More common in western societies but is increasing in eastern societies because of globalization u
Etiology u u u Biological Cognitive Sociocultural
Biological u u u Genes Appetite and weight regulation imbalance in hypothalamus (e. g. the hormone Leptin) Neurotransmitters, e. g. serotonin E. g. Mazzeo & Bulik (2009)
Cognitive u Attentional biases and cognitive styles that distort reality/body image E. g. Southgate et al. (2008)
Sociocultural u Media exposure, social learning E. g. Becker et al. (1995)
Evaluation +Can be used for therapy +Supporting research -Methodological problems with research -Simplistic: Each perspective emphasizes one factor
Conclusion u An interactionistic explanation of anorexia nervosa is preferable, e. g. the diathesis-stress model or the biopsychosocial model
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