Predisposition to addiction may be genetic, study finds


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People who have a high sensation-seeking personality trait may be more likely to develop an addiction to cocaine, according to a Rutgers study.

“Although many people try illicit drugs like cocaine or heroin, only a small proportion develop an addiction,” said lead author Morgan James, a member of the Rutgers Brain Health Institute and an assistant professor in the department of psychiatry at Rutgers Robert Wood Johnson Medical School. “The interaction found between sensation-seeking traits and the drug-taking experience show that predisposition to addiction has a genetic basis, and that this interacts with environmental factors such as patterns of drug use. The sensation-seeking trait was predictive of rats’ likelihood to exhibit stronger motivation for drugs when we gave them the opportunity to take cocaine.”



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