Chapter 10 (Lecture - ch 8 in textbook ED) Flashcards
photo and excerpt at the opening of the chapter:
- describe eating disorder symptoms (doubt, anger, disgust) and highlights role of distorted body image
- interconnection between body and mind (both somatic and mental components in relation to eating disorders)
- voice: people experience ED differently, these are her own words and how she felt
- recovery often involves reclaiming one’s body and voice by correcting ideas about eating, body image, and self perception (including self-narrative)
Intro to eating disorders
- the range of ED’s examined are characterised by different kinds of preoccupations with food and weight
- among Canadian women ages 15-24, 1.5% had an ED in 2002 - it is believed that this percentage has increased
- mid to late adolescence is the time of life with the highest prevalence of eating disorders (given the importance of early detection, time of onset should be targeted)
ED can have very serious consequences for physical health
- Anorexia nervosa has the highest mortality rate of ANY psychiatric illness - 10% of those diagnosed die within 10 years of onset
- people w anorexia nervosa have about a 20-25 reduction in life expectancy
- it may be helpful to think of ED and their symptoms as existing along a continuum of severity, rather than as a binary (ill or not ill)
One important concept used to under them is body image - what is body image?
body image: how people think about and act towards their bodies
- people w ED usually have measurable difference in their perceptions of their own bodies compared to people without ED (distorted or inaccurate image)
DSM-5 identifies the following features as being core to the experience of ED
- persistent disturbances of eating or eating related behaviours, resulting in alterations in consumption of food
- changed eating behaviour which significantly impacts health or functioning
- key diagnoses in the DSM-5 include: anorexia nervosa, bulimia nervosa, and binge eating disorder
Anorexia Nervosa - diagnostic criteria include
a. behaviours such as food restriction, purging, misuse of medications, over-exercising, which interfere with maintaining an adequate weight for health
b. powerful fear of weight gain/becoming overweight
c. overestimation of body size (inaccurate perception)
d. denial of the seriousness of the condition and its impact
- potentially life-threatening, high mortality rate stemming from cardiac arrest, suicidality and other causes
Bulimia Nervosa - diagnostic criteria include
- food restriction, binging, and purging to prevent weight gain
- a cycle of behaviours occurring at least once a week over a period of at least three months
- people with bulimia often experience extreme feelings of shame and hide these behaviours (may lead to more guilt)
- negative perception of body weight/shape, and over-valuation of these characteristics
- often people w bulimia are often average weight, but may experience fluctuations
- associated with depression, self-harm, suicidality
Binge Eating Disorder - new to DSM-5
- consumption of an unusually large amount of food over a short period of time (different from overeating, which is very common)
- produces psychological distress
- person feels out of control about what they are eating, how much they are eating, and when they are able to stop
- does not feature compensating behaviours (e.g., excessive exercise, induced vomiting, misuse of laxatives/diuretics), distinguishing it from bulimia nervosa
- considered a disorder when it occurs at least once a week for at least three months
Prevalence rates for men and women for all 3 ED
Anorexia nervosa: women 0.9%, men 0.3%
Bulimia nervosa: women 1.5%, men 0.5%
Binge eating disorder: women 3.5%, men 2.0%
Residual diagnosis of ED - Avoidant Restrictive Food Intake Disorder (ARFID)
- usually starts in infancy/childhood, may stem from traumatic experience involving food (like becoming ill)
- involves unusual avoidance of particular types/textures/colours of food
- severe enough to impair adequate nutrition
- not stemming from inadequate access to food or other medical condition (allergies, intolerance)
- not stemming from limited access to food or a medical condition
- does not feature body dissatisfaction or preoccupations with weight/shape
- if untreated, can lead to anorexia nervosa or bulimia nervosa in adolescence or adulthood
Residual diagnoses of ED - Rumination disorder
- consistent (effortless) regurgitation of chewed and/or partially digested food over a period of at least one month - common among infants
- rumination may be a symptom of anorexia nervosa or bulimia nervosa
- rumination differs from what we discussed as part of OCD
Residual diagnoses of ED - Pica
- persistent consumption of non-food items over a period of at least one month (paper, dirt, hair, chalk) - normal during childhood, term used to described presence in other life stages
Residual diagnoses of ED - Other Specified Feeding or ED (OSFED)
Examples include:
- atypical anorexia nervosa
- bulimia nervosa of low frequency and/or limited duration
- purging disorder (persistent purging, no binge eating)
- night eating syndrome (night-time eating causing distress and impairing functioning)
These disorders relate to AN, BN, and BED (the 3 primary diagnoses discussed) w minor differences in diagnostic criteria
Unspecified feeding or ED: symptoms do not meet criteria for full diagnosis (of AN, BN, BED, OSFED, or ARFID), but cause distress and impaired functioning - not currently recognised in the DSM
Anorexia athletica (compulsive exercising) - not part of DSM-5
- over-exercise to the point of neglecting other priorities in life
- exercise goals take ultimate priority
- exercise used to control body shape and weight
- exercise used provide a sense of power, control, self-respect
Potential controversies:
- would be very common among professional athletes
- and recreational athletes
- out culture could be seen as actively promoting this type of disorder - we often commend and celebrate this type of relentless dedication to behaviours viewed positively (like “work addiction”)
- we may simultaneously glamourise AND pathologies this potential disorder
Orthorexia - NOT part of DSM-5
- an obsession with healthy food
- a cluster of food and weight related symptoms, involving obsessive focus on food
- eating only foods perceived to be “healthy”
- relying only on “natural remedies” for illness
- finding more pleasure in following food rules than in the experience of the food itself, feelings of intense despair when failing to follow food rules
- may appear to be a positive or “healthy” behaviour, but can result in social isolation and ill health