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Evolutionary Psychopathology: A Unified Approach

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Marco del Giudice

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“Runaway competition for thinness generates an evolutionary mismatch, which drives up the risk of maladaptive eating symptons; in particular Abed suggested that AN arises as a direct consequence of competition for thiness, whereas BN may stem from attempts to maintaina nubile body shape.”

MindFemaleEvolutionary PsychologyEating DisordersEvolutionary PsychopathologyAnorexia NervosaTcaBulimina Nervosa
Book:Evolutionary Psychopathology: A Unified Approach
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“Androgens in Eating Disorders show an intriguing pattern: while anorexics tend to have low testosterone, there are indications that bulimia is associated with exposure to high levels of prenatal androgens. In addition, polycystic ovarian syndrome (PCOs, a condition caused by elevated androgens) has been associated with increased BN risk but decreased AN risk.”

MindFemaleEvolutionary PsychologyEating DisordersEvolutionary PsychopathologyAnorexia NervosaTcaBulimina Nervosa
Book:Evolutionary Psychopathology: A Unified Approach
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“Social anxiety plays an important role in status competition as a behavioral defense against rejection and defeat. Intense social anxiety is especially adaptive for subordinate or unattractive individuals who need to avoid further status losses. However, excessive or misplaced anxiety may interfere with the acquisition of status and mates, and potentially lead to self-reinforcing circles of low self-esteem.”

MindAnxietyFemaleDisorderEvolutionary PsychologyEvolutionary Psychopathology
Book:Evolutionary Psychopathology: A Unified Approach
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“Ferguson and colleagues also reviewed that thin models in the media have comparatively small effects on body dissatisfaction, and mainly on women with preexisting weight concerns and/or high neuroticism. Instead, the largest and most consistent effects are those of mating competition in the peer network -that is, the number of attractive and available women in one's inmediate social environment (for example, friends and colleagues).”

MindFemaleEvolutionary PsychologyEating DisordersEvolutionary PsychopathologyAnorexia NervosaTcaBulimina Nervosa
Book:Evolutionary Psychopathology: A Unified Approach
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“The pubertal surge of sex hormones plays a major role in the onset of eating symptoms in females, as shown by the fact that the heritability of Eating Disorders increases sharply at mid-puberty in girls, but not in boys. In particular, binge eating is strongly modulated by the interaction of estrogens and progesterone acrosss the menstrual cycle, consistent with the role played by these hormones in the regulaion of hunger and feeding. Both the frequency of bingeing and its heritability peak after ovulation, in tandem with rising progesterone levels.”

MindFemaleEvolutionary PsychologyEating DisordersEvolutionary PsychopathologyAnorexia NervosaTcaBulimina Nervosa
Book:Evolutionary Psychopathology: A Unified Approach
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“A thinness ideal at the social and individual levels is not the only precondition for the bingeing-purging cycle: bingeing require easy access to large amounts of high-calorie food, and most purging methods are impractical without modern plumbing and sanitation.”

MindFemaleEvolutionary PsychologyEating DisordersEvolutionary PsychopathologyAnorexia NervosaTcaBulimina Nervosa
Book:Evolutionary Psychopathology: A Unified Approach
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“Food restriction does not necessarily lead to self-starvation; in fact, a common effect of sustained weight loss is a tendency to binge whenever food is available (typically with feelings of automaticity and loss of control). Common triggers for binges include tempting food and excessive hunger, but also interpersonal stressors and strong emotions. To compensate for impulsive overeating, some people start to adopt purging behaviors such as vomiting and laxative use. The combination of bingeing and purging may lead to the onset of a self-reinforcing cycle. Especially in the early stages of the cycle, bingeing and purging cause intense guilt, shame and anxiety. Those negative emotions may then trigger more binges or prompt renewed attempts to restrict food, which ultimately end up strengthening the cycle. Bingeing and purging can be rewarding on a number of levels. On the one hand, these symptoms relieve anxiety, boredom, emptiness, and other negative feelings; on the other hands, they prevent stressful interactions with other people (e.g. staying home from school or work to binge), attract attention from family and friends, and may provide a way to communicate one's ill-defined psychological distress in concrete terms. Over time, the behavioral sequence of bingeing and purging becomes more automatic and less emotionally intense, but also harder to interrupt.”

MindFemaleEvolutionary PsychologyEating DisordersEvolutionary PsychopathologyAnorexia NervosaTcaBulimina Nervosa
Book:Evolutionary Psychopathology: A Unified Approach
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