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Revista Brasileira de Psiquiatria
On-line version ISSN 1809-452X
MORGAN, Christina M; VECCHIATTI, Ilka Ramalho and NEGRAO, André Brooking. Etiology of eating disorders: biological, psychological and sociocultural determinants. Rev. Bras. Psiquiatr. [online]. 2002, vol.24, suppl.3, pp.18-23. ISSN 1809-452X. http://dx.doi.org/10.1590/S1516-44462002000700005.
Eating disorders have a multifactorial etiology, composed by genetic predisposition, sociocultural factors, and biological and psychological vulnerabilities. Among the predisposing factors, emphasis is given to a history of eating and/or mood disorders, personality traits, patterns of family interaction, alterations in brain monoamines and sociocultural overvalued drive for thinness. Dieting is the most frequently event present at the onset of an eating disorder. Nevertheless, dieting itself is not sufficient to precipitate an eating disorder. An interaction among risk factors and other precipitating events is necessary. Finally, the chronic or transitory course of an eating disorder is related to the persistence of distorted cognitions, to the occurrence of significant vital events, and to starvation-induced psychobiological alterations.
Keywords : Family; Society; Personality; Anorexia nervosa; Bulimia nervosa.