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Genetic and Environmental Influences on Restrained Eating Behavior: IJED-08-0240.R2

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About the Course:

Objective:
We examined the relative contributions of genetic and environmental influences to restrained eating.

Method:
Restrained eating was assessed by the Restraint Scale in a survey mailed to all twins enrolled in the University of Washington Twin Registry. We used structural equation modeling to estimate genetic and nongenetic contributions to restrained eating.

Results:
1,196 monozygotic (MZ), 456 same-sex dizygotic (DZ) twins, and 447 opposite-sex twins were included in analyses. Restraint Scale scores were more closely correlated in MZ twins (rmale = .55, rfemale = .55) than in same-sex DZ twins (rmale = .31, rfemale = .19). Based on structural equation modeling, the estimated heritability for restrained eating, adjusted for body mass index (BMI) and sex, was 43% (95% confidence interval 35-50%). There was little evidence for common environmental effects.

Discussion:
These results indicate an inherited component to restrained eating. Genes could influence restrained eating directly or through inherited mediators such as personality factors or tendencies to gain weight.

This course is based on the reading-based online article, Genetic and Environmental Influences on Restrained Eating Behavior: IJED-08-0240.R2 created by Ellen Schur, MD, MS, Carolyn Noonan, MS, Carolyn Noonan, MS, Janet Polivy, PhD, Jack Goldberg, PhD, and Dedra Buchwald, MD

Journal/Publisher:

Wiley Interscience

Publication Date:

December 09

Course Material Authors

Ellen Schur, MD, MS

Department of Medicine, University of Washington School of Medicine, Seattle, Washington

Carolyn Noonan, MS

Department of Medicine, University of Washington School of Medicine, Seattle, Washington

Carolyn Noonan, MS

Department of Medicine, University of Washington School of Medicine, Seattle, Washington

Janet Polivy, PhD

Department of Psychology, University of Toronto at Mississaugua, Toronto, Ontario, Canada

Jack Goldberg, PhD

Department of Epidemiology, University of Washington and Vietnam Era Twin Registry, Seattle, Washington

Dedra Buchwald, MD

Department of Medicine, University of Washington School of Medicine, Seattle, Washington

Course Creator

Dan Rebek, Ph.D.

Recommended For:

This course is recommended for health care professionals, especially psychologists, counselors, social workers, and nurses who seek knowledge about eating disorders It is appropriate for an intermediate level of participants’ knowledge.

Course Objectives:

  1. Discuss the genetic and environmental influences to restrained eating.

  2. Explain the inherited component to restrained eating.

  3. Recognize how genes can influence restrained eating.

Course Article

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Course Article

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Unavailable
Course Number 101660
1 credit hour
Log in for credit hours relevant to your licensure.

  • Reading-Based Online
Exam Fee: No Longer Available

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4.05 out of 5
19 members have taken this course

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