The high derived from cocaine use is interpreted by the brain as a reward, according to new research by scientists at McGill University in Montreal. They studied 10 non-addicted drug users who alternated between sniffing cocaine and a placebo powder and found their brains secreted dopamine, a chemical that is like a reward-response. The more coke that a participant had taken in the past, the more his brain secreted dopamine. The researchers say that this information may help in developing treatment against drug addiction.
Past drug use increases the brain’s reward response