Article

Prevalence and Long-Term Course of Lifetime Eating Disorders in an Adult Australian Twin Cohort

School of Psychology, Flinders University, Adelaide, South Australia, Australia.
Australian and New Zealand Journal of Psychiatry (Impact Factor: 3.41). 03/2006; 40(2):121-8. DOI: 10.1111/j.1440-1614.2006.01758.x
Source: PubMed

ABSTRACT

Few studies exist that have examined the spectrum and natural long-term course of eating disturbance in the community. We examine the lifetime prevalence and long-term course of anorexia nervosa (AN), bulimia nervosa (BN) and eating disorder not otherwise specified (EDNOS) in an adult female twin population.
Female twins (n = 1002) from the Australian Twin Registry, aged 28-39 years, were assessed using the Eating Disorder Examination, revised to yield lifetime diagnostic information. For women with lifetime eating disorders, the assessment occurred, on average, 14.52 years (SD = 5.65) after onset of their disorder.
In accordance with other community studies, we found a 1.9% lifetime prevalence of AN, with an additional 2.4% who met the criteria for 'partial AN' (absence of amenorrhea). Criteria for BN were met by 2.9% of the women, an additional 2.9% of women met criteria for binge eating disorder, while 5.3% met criteria for purging disorder unaccompanied by binge eating (EDNOS-p). Eleven (7%) of the women with lifetime eating disorders had a current eating disorder. Each diagnostic group continued to be differentiated by current eating pathology from women without lifetime eating disorders. Although approximately 75% of the women had a good outcome, less than 50% of each diagnostic group was asymptomatic.
Eating disorders tend to improve over time often reaching subdiagnostic levels of severity, but only a minority of sufferers becomes asymptomatic. The DSM-IV diagnosis EDNOS needs to be considered in studies of the prevalence and course of eating disorders.

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    • "Key Words: Stigmatization, bulimia nervosa, knowledge, eating disorder symptoms (J Nerv Ment Dis 2015;203: 00–00) B ulimia nervosa (BN) affects a substantial proportion of the population and is associated with distress and role impairment (Hay, 2003; Hay and Mond, 2005). However, only a minority of individuals with BN seek appropriate professional treatment (Hudson et al., 2007; Swanson et al., 2011; Wade et al., 2006). It has been proposed that one of the main barriers to treatment seeking among individuals with these disorders is the fear of stigma (Becker et al., 2004; Hepworth and Paxton, 2007). "
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    Full-text · Article · Mar 2015 · Journal of Nervous & Mental Disease
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    • "Eating disorders are not the 'preserve' of females, the wealthy or 'westerners'. In the general population, lifetime prevalence of anorexia nervosa is around 1% in women and < 0.5% in men, bulimia nervosa around 2% in women and 0.5% in men, and binge eating disorder around 3.5% in women and 2.0% in men (Favaro et al., 2003; Hudson et al., 2007; Keski-Rahkonen et al., 2007; Lewinsohn et al., 2000; Oakley Browne et al., 2006; Preti et al., 2009; Raevuori et al., 2009; Striegel-Moore et al., 2003; Wade et al., 2006). Point (three-month) prevalence in Australia is estimated at around 1% for bulimia nervosa, 2% for binge eating disorder (using the DSM-5 criteria of weekly frequency of binge eating and extreme weight control behaviours) and 3% for other eating disorders (specified or unspecified according to the new DSM-5 criteria) (Hay et al., 2008). "
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