Brain shape linked to cocaine addiction

Brain shape linked to cocaine addiction.

Why are some people able to use cocaine without becoming addicted? A new study suggests the answer may lie in the shape of their brains.

Sporadic cocaine users tend to have a larger frontal lobe, a region associated with self-control, while cocaine addicts are more likely to have small frontal lobes, according to the study, which was published in the journal Biological Psychiatry.