Research suggests that the high that drug users feel is affected by the speed with which a drug enters and leaves the brain. According to observations, it seems that “fast-in, fast-out” drugs tend to be more addictive due to the intensity of the high experienced by users. The National Institute on Drug Abuse (NIDA/NIH) utilized positron emission tomography imaging to track the movement of cocaine through the brain in the video below.

Click here to read the full article for the National Institute on Drug Abuse.