A new study from Cambridge University found that cocaine users with a larger frontal lobe were less likely to become addicted to cocaine.
In their study, researchers looked at a number of recreational cocaine users. They found that many were addicted, but there were a few people who had used cocaine for years without ever becoming dependent. The study participants underwent a brain scan and a personality test as a part of the research. Those that had never become addicted to cocaine were found to have an abnormally large frontal lobe. This is the part of the brain that handles self-control and decision making.