Genetic and environmental influences on binge eating in the absence of compensatory behaviors: A population-based twin study
Version of Record online: 11 OCT 2004
Copyright © 2004 Wiley Periodicals, Inc.
International Journal of Eating Disorders
Volume 36, Issue 3, pages 307–314, November 2004
How to Cite
Reichborn-Kjennerud, T., Bulik, C. M., Tambs, K. and Harris, J. R. (2004), Genetic and environmental influences on binge eating in the absence of compensatory behaviors: A population-based twin study. Int. J. Eat. Disord., 36: 307–314. doi: 10.1002/eat.20047
- Issue online: 11 OCT 2004
- Version of Record online: 11 OCT 2004
- Manuscript Accepted: 2 DEC 2003
- genetic factors;
- environmental factors;
- binge eating
The current study explores the extent to which genetic and environmental factors influence liability to binge eating in the absence of compensatory behaviors (BE) in a population-based sample of twins.
Questionnaire data on 8,045 same-sex and opposite-sex twins, aged 18–31 years, from a Norwegian twin registry were used to assess BE during the last 6 months.
The best-fitting biometrical model suggested that the heritability of BE was 41% (95% confidence interval [CI]: 0.31–0.50). Individual environmental factors accounted for the rest of the variance (59%; 95% CI: 0.50–0.69). No significant sex differences were found, but the statistical power to detect such effects was low. Shared environmental influences on the liability to BE in males could not be ruled out.
The findings indicate significant additive genetic influences on BE, supporting the validity of the core features of binge eating disorder as a diagnostic category. © 2004 by Wiley Periodicals, Inc. Int J Eat Disord 36: 307–314, 2004.