Journal ArticleDOI
Twin studies of eating disorders: A review
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TLDR
It is not possible to draw firm conclusions regarding the precise contribution of genetic and environmental factors to anorexia nervosa, but twin studies confirm that bulimia nervosa is familial and reveal significant contributions of additive genetic effects and of unique environmental factors in liability to bulimic nervosa.Abstract:
Objective
Twin methodology has been used to delineate etiological factors in many medical disorders and behavioral traits including eating disorders. Although twin studies are powerful tools, their methodology can be arcane and their implications easily misinterpreted.
Method
The goals of this study are to (a) review the theoretical rationale for twin studies; (b) provide a framework for their interpretation and evaluation; (c) review extant twin studies on eating disorders; and (d) explore the implications for understanding etiological issues in eating disorders.
Discussion
On the basis of this review, it is not possible to draw firm conclusions regarding the precise contribution of genetic and environmental factors to anorexia nervosa. Twin studies confirm that bulimia nervosa is familial and reveal significant contributions of additive genetic effects and of unique environmental factors in liability to bulimia nervosa. The magnitude of the contribution of shared environment is less clear, but in the studies with the greatest statistical power, it appears to be less prominent than additive genetic factors. © 2000 by John Wiley & Sons, Inc. Int J Eat Disord 27: 1–20, 2000.read more
Citations
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Journal ArticleDOI
Coming to Terms With Risk Factors for Eating Disorders: Application of Risk Terminology and Suggestions for a General Taxonomy
TL;DR: Common risk factors from longitudinal and cross-sectional studies were gender, ethnicity, early childhood eating and gastrointestinal problems, elevated weight and shape concerns, negative self-evaluation, sexual abuse and other adverse experiences, and general psychiatric morbidity.
Journal ArticleDOI
Risk factors for eating disorders.
TL;DR: The authors illustrate how studies of sociocultural risk factors and biological factors have progressed on parallel tracks and propose that major advances in understanding the etiology of eating disorders require a new generation of studies that integrate these domains.
Journal ArticleDOI
Risk factors for eating disorders.
TL;DR: The authors illustrate how studies of sociocultural risk factors and biological factors have progressed on parallel tracks and propose that major advances in understanding the etiology of eating disorders require a new generation of studies that integrate these domains.
Journal ArticleDOI
Are Eating Disorders Culture-Bound Syndromes? Implications for Conceptualizing Their Etiology
Pamela K. Keel,Kelly L. Klump +1 more
TL;DR: Findings suggest that BN is a culture-bound syndrome and AN is not, heritability estimates for BN may show greater variability cross-culturally than heritability Estimates for AN, and the genetic bases of these disorders may be associated with differential pathoplasticity.
Journal ArticleDOI
Is the Tendency to Engage in Entrepreneurship Genetic
TL;DR: This article used quantitative genetics techniques to compare the entrepreneurial activity of 870 pairs of monozygotic (MZ) and 857 pairs of same-sex dizygotic twins from the United Kingdom.
References
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