The myth that cannabis is harmless because it’s natural has been further debunked—by scientists in a pot-friendly state. New research from the University of Colorado Anschutz Medical Campus shows that heavy lifetime cannabis use may harm working memory in young adults.
In what the university calls the largest study of its kind, researchers used brain imaging technology to explore the effects of recent and lifetime cannabis use on brain function among more than 1,000 people ages 22 to 36. During a task assessing working memory—the short-term storage of information that can be applied to activities such as reasoning and problem-solving—the majority of recent (68%) and heavy lifetime (63%) cannabis users showed reduced brain activity. The findings were published Jan. 28 in the journal JAMA Network Open.
