Casual marijuana use may come with some not-so-casual side effects.
For the first time, researchers at Northwestern University have analyzed the relationship between casual use of marijuana and brain changes – and found that young adults who used cannabis just once or twice a week showed significant abnormalities in two important brain structures.
The study’s findings were published in the Journal of Neuroscience, and are similar to those of past research linking chronic, long-term marijuana use with mental illness and changes in brain development.
Dr. Hans Breiter, co-senior study author, said he was inspired to look at the effects of casual marijuana use after previous work in his lab found that heavy cannabis use caused similar brain abnormalities to those seen in patients with schizophrenia.
“There were abnormalities in their working memory, which is fundamental to everything you do,” Breiter, a professor of psychiatry and behavioral sciences at Northwestern University Feinberg School of Medicine, told FoxNews.com. “When you make judgments or decisions, plan things, do mathematics – anything you do always involves working memory. It’s one of the core fundamental aspects of our brains that we use every day. So given those findings, we decided we need to look at casual, recreational use.”
Because these brain regions are central for motivation, the findings from Northwestern help support the well-known theory that marijuana use leads to a condition called amotivation. Also called amotivational syndrome, this psychological condition causes people to become less oriented towards their goals and purposes in life, as well as seem less focused in general.
Source: Fox News
