Scientists have discovered that addictions may be（1）. A team from Britain’s University of Cambridge found that（2）of drug addicts share the same brain abnormalities as their drug（3）brothers and sisters. The research team said these abnormal brain structures are linked to（4） self-control and drug dependence. The researchers suggest that addiction is in some ways a “（5）of the brain”. This may provide important new ways into helping people with problems of self-control when it（6） to addictions. The study sought to find out if drugs changed the “（7）” of the brain or whether the brains of drug addicts were wired differently from（8）.
Lead researcher Dr Karen Ersche told the BBC: “It has（9）been known that not everyone who（10）drugs becomes addicted.” She continued: “It shows that drug addiction is not a（11）of lifestyle, it is a disorder of the brain and we need to recognize this. These brothers and sisters who don’t have addiction problems, what they can tell us is how they（12）these problems, how they manage self-control in their（13）life.” Dr Ersche and her colleagues studied 50（14）of siblings, one with a history of drug addiction and one with no（15）of taking drugs. She compared these with 50 healthy people. She concluded: “We need to find out how these non-addicted siblings were able to resist using drugs.”
