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Unformatted text preview: Eating Disorders Anorexia nervosa Bulimia nervosa Binge-eating Pica Features and definition Fear of obesity that does not diminish with weight loss; distorted body image; weight loss of 25% or more of original body weight; refusal to maintain normal weight; no known causative medical or psychological illness To diagnose, must include: recurrent binges; awareness of abnormality; inability to stop; depression and/or shame after event; no known causative medical or psychological illness Must have 3 or more: consumption of high-kcal foods; inconspicuous eating during binges; binge stopped only by pain, sleep, interruption, or purging; repeated attempts at weight loss; weight fluctuations of 10 lbs. or more To diagnose, must include: awareness of abnormality; fear or inability to stop; depression; obsessive- compulsive tendencies; no known medical or psychological illness Must have 3 or more: recurrent binges; consumption of high- kcal foods; inconspicuous bingeing; binge stopped only by pain, sleep, or interruption; high body weight; obsession re: food, eating, or weight Repeated eating of non-food substances; must persist for longer than one month; cannot be secondary to some other disorder Incidence & demograp hics Higher in U.S. and other industrialized nations; affects 3% of U.S. college women; incidence in men small but growing; first described in 1689 (UK) Higher in U.S. and other industrialized nations; affects 9- 10% of U.S. college women; incidence in men growing; named as disease in 1979 Higher in U.S. and other industrialized nations; affects 15% of U.S. college women; may affect significant subset of obese and depressed populations Disease is rare but may occur in greater numbers among women, in pregnancy, among the poor, mentally retarded, and neglected children Course of illness Usually unremitting unless intervention; 30% of cases continue until death if no intervention; high relapse rate; overall Chronic but intermittent (not unrelenting as anorexia); episodes alternate with periods of normal eating; Chronic but intermittent; may be characterized by poor nutrition habits overall and/or lack of Chronic (unless pica of pregnancy) mortality 5-10% (includes both treated and untreated); single episodes rare; may be familial pattern obesity commonly present in parents and/or siblings nutrition education Typical age of onset Adolescence Late adolescence to mid-20s Early adulthood Early childhood; may continue into adulthood Body weight Extremely low Likely to appear near normal High weight-for- height and increasing Depends on substance being consumed... Functioni ng Perfectionists; high- functioning; high- achievers High-functioning; high-achievers Functioning typically decreases as body weight increases Varies Other features & symptoms Peculiar behaviors around food; obsessive; compulsive; may exhibit hoarding behavior; goal- oriented Binges often planned; rapid eating, little chewing, increased saliva; depression; may be substance abuse...
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- Fall '08