Genetic and environmental influences on drug use and abuse/dependence in male and female twins.
Twins were recruited through alcohol and drug treatment programs. With structural equation modeling, genetic and environmental estimates were obtained for use and DSM-III abuse/dependence of sedatives, opioids, cocaine, stimulants, and cannabis as well as any illicit drug. Analyses were conducted separately for males and females. Models included thresholds based on population prevalence of use or abuse/dependence and ever having been in treatment. Genetic influences were found for most measures. They were generally stronger for males than females and for clinical diagnoses of abuse/dependence compared to use. Common environmental influences played a greater role in use than abuse/dependence.
van den Bree
M B
MB
Intramural Research Program, National Institute on Drug Abuse, Baltimore, MD 21224, USA. mvandenb@intra.nida.nih.gov
Johnson
E O
EO
Neale
M C
MC
Pickens
R W
RW
D000293:Adolescent; D000328:Adult; D000437:Alcoholism / Q000235:genetics / Q000523:psychology / Q000534:rehabilitation; D004200:Diseases in Twins / Q000235:genetics* / Q000523:psychology; D005260:Female; D020022:Genetic Predisposition to Disease / Q000235:genetics / Q000523:psychology; D006801:Humans; D013287:Illicit Drugs; D008297:Male; D008875:Middle Aged; D008910:Minnesota; D011619:Psychotropic Drugs; D012307:Risk Factors; D012931:Social Environment; D019966:Substance-Related Disorders / Q000235:genetics* / Q000523:psychology / Q000534:rehabilitation
D013287:Illicit Drugs; D011619:Psychotropic Drugs