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Article first published online: 9 NOV 2010
Copyright © 2010 Wiley Periodicals, Inc.
International Journal of Eating Disorders
Volume 44, Issue 2, pages 169–177, March 2011
How to Cite
Suisman, J. L., Alexandra Burt, S., McGue, M., Iacono, W. G. and Klump, K. L. (2011), Parental divorce and disordered eating: An investigation of a gene-environment interaction. Int. J. Eat. Disord., 44: 169–177. doi: 10.1002/eat.20866
Parts of this manuscript were presented at the Eating Disorder Research Society meeting, Montreal, Quebec, Canada, September 25–27, 2008 and the Eating Disorder Research Society meeting, Brooklyn, New York, September 25–27, 2009.
- Issue published online: 11 FEB 2011
- Article first published online: 9 NOV 2010
- Manuscript Accepted: 28 JUL 2010
- Michigan State University Intramural Grants Program. Grant Number: 71-IRGP-4831
- National Institute of Alcohol Abuse and Alcoholism. Grant Number: R01 AA 09367
- National Institute on Drug abuse. Grant Number: R01 DA 013240
- disordered eating;
- parental divorce;
- gene-environment interaction;
- eating disorders;
We investigated gene-environment interactions (GxE) for associations between parental divorce and disordered eating (DE).
Participants were 1,810 female twins from the Michigan State University Twin Registry and the Minnesota Twin Family Study. The Minnesota Eating Behaviors Survey was used to assess DE. We tested for GxE by comparing the heritability of DE in twins from divorced versus intact families. It was hypothesized that divorce would moderate the heritability of DE, in that heritability would be higher in twins from divorced than twins from intact families.
As expected, the heritability of body dissatisfaction was significantly higher in twins from divorced than intact families. However, genetic influences were equal in twins from divorced and intact families for all other forms of DE.
Although divorce did not moderate heritability of most DE symptoms, future research should replicate GxEs for body dissatisfaction and identify factors underlying this unique relationship. © 2010 by Wiley Periodicals, Inc. (Int J Eat Disord 2010)