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Specificity of genetic and environmental risk factors for use and abuse/dependence of cannabis, cocaine, hallucinogens, sedatives, stimulants, and opiates in male twins
- Source :
- The American journal of psychiatry. 160(4)
- Publication Year :
- 2003
-
Abstract
- Data on use and misuse of six classes of illicit substances by male twin pairs were used to examine whether genetic and shared environmental risk factors for substance use disorders are substance-specific or -nonspecific in their effect.Lifetime history of use and abuse/dependence of cannabis, cocaine, hallucinogens, sedatives, stimulants, and opiates was assessed at personal interview in both members of 1,196 male-male twin pairs ascertained by the Virginia Twin Registry. Multivariate twin modeling of substance-nonspecific (common) and substance-specific genetic, shared environmental, and unique environmental risk factors was performed by using the program Mx.High levels of comorbidity involving the different substance categories were observed for both use and abuse/dependence. One common genetic factor was found to have a strong influence on risk for illicit use and abuse/dependence for all six substance classes. A modest influence of substance-specific genetic factors was seen for use but not for abuse/dependence. Shared environmental factors were more important for use than for abuse/dependence and were mediated entirely through a single common factor.In an adult population-based sample of male twins, both the genetic and the shared environmental effects on risk for the use and misuse of six classes of illicit substances were largely or entirely nonspecific in their effect. Environmental experiences unique to the person largely determine whether predisposed individuals will use or misuse one class of psychoactive substances rather than another.
- Subjects :
- Adult
Male
medicine.medical_specialty
Marijuana Abuse
Multivariate analysis
Substance-Related Disorders
media_common.quotation_subject
Dizygotic twin
Monozygotic twin
Comorbidity
Cocaine-Related Disorders
Sex Factors
Risk Factors
medicine
Diseases in Twins
Prevalence
Twins, Dizygotic
Humans
Genetic Predisposition to Disease
Registries
Risk factor
Psychiatry
media_common
biology
Addiction
Virginia
Twins, Monozygotic
Middle Aged
biology.organism_classification
medicine.disease
Opioid-Related Disorders
Twin study
Psychiatry and Mental health
Phenotype
Multivariate Analysis
Cannabis
Psychology
Subjects
Details
- ISSN :
- 0002953X
- Volume :
- 160
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- The American journal of psychiatry
- Accession number :
- edsair.doi.dedup.....58da560fef634a978284862b33151077