Seeing Green: Pot Changes Brain's Response to Money
Smoking marijuana may change the way people's brains respond to certain rewards, such as the prospect of winning some money, according to a new study.
In the study, participants played a game in which they could win a small amount of money. The researchers found that the brains of people who smoked marijuana did not respond to the idea of winning the money as strongly as did the brains of people who did not use the drug.
The results suggest that for people who smoke pot, "there is not as much pleasure that is being received from something that would naturally give somebody pleasure," study author Mary Heitzeg, an assistant professor of psychiatry at the University of Michigan Medical School, told Live Science.
In the study, researchers looked at 108 people in their early 20s. The researchers scanned the participants' brains three times over the course of the four-year study. During the brain scans,...
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