Show Summary Details

Page of

PRINTED FROM OXFORD HANDBOOKS ONLINE ( © Oxford University Press, 2018. All Rights Reserved. Under the terms of the licence agreement, an individual user may print out a PDF of a single chapter of a title in Oxford Handbooks Online for personal use (for details see Privacy Policy and Legal Notice).

date: 03 March 2021

Abstract and Keywords

The tools of genetic epidemiology—family, adoption, and twin studies—show convincingly that substance use behavior and substance use disorders are influenced by both genetic and familial and extrafamilial environmental factors. Environmental factors appear to play a more influential role in the early stages of substance use, whereas genetic factors become more important in the development of problem use and substance use disorder. Moreover, some genetic effects are likely conditional on conducive environments; research employing both behavior genetic approaches and measured genes point to important gene–environment interactions that promote substance use and dependence. Consequently, a full understanding of the addiction process requires investigating substance use behavior within its comorbid context. The identification of specific genetic mechanisms underlying these heritable influences is elusive. These findings have prompted the development of new strategies for testing the joint effect of multiple genetic variants in gene-based or gene pathway analyses.

Keywords: Genetics, twin studies, adoption studies, association studies, linkage, GWAS, G×E interaction

Access to the complete content on Oxford Handbooks Online requires a subscription or purchase. Public users are able to search the site and view the abstracts and keywords for each book and chapter without a subscription.

Please subscribe or login to access full text content.

If you have purchased a print title that contains an access token, please see the token for information about how to register your code.

For questions on access or troubleshooting, please check our FAQs, and if you can''t find the answer there, please contact us.