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The influence of gene-environment interactions on the development of alcoholism and drug dependence.


ABSTRACT: Alcoholism and drug dependence are common psychiatric disorders with a heritability of about 50%; therefore genetic and environmental influences are equally important. Early-life stress is a predictor of adolescent problem drinking/drug use and alcohol/drug dependence in adulthood, but moderating factors governing the availability of alcohol/drug are important. The risk-resilience balance for addiction may be due in part to the interaction between genetic variation and environment stressors (G?×?E); this has been confirmed by twin studies of inferred genetic risk. Measured genotype studies to detect G?×?E effects have used a range of alcohol consumption and diagnostic phenotypes and stressors ranging from early-life to adulthood past year life events. In this article, the current state of the field is critically reviewed and suggestions are put forth for future research.

SUBMITTER: Enoch MA 

PROVIDER: S-EPMC3470472 | biostudies-literature | 2012 Apr

REPOSITORIES: biostudies-literature

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The influence of gene-environment interactions on the development of alcoholism and drug dependence.

Enoch Mary-Anne MA  

Current psychiatry reports 20120401 2


Alcoholism and drug dependence are common psychiatric disorders with a heritability of about 50%; therefore genetic and environmental influences are equally important. Early-life stress is a predictor of adolescent problem drinking/drug use and alcohol/drug dependence in adulthood, but moderating factors governing the availability of alcohol/drug are important. The risk-resilience balance for addiction may be due in part to the interaction between genetic variation and environment stressors (G ×  ...[more]

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