Researchers reported that those with a history of cannabis use “demonstrated significantly better cognitive performance.” Cannabis use “was not associated with increased risk of dementia” and researchers found “no supporting evidence of a causal link with [longitudinal] cognitive decline in later life.”
“This study adds to a growing body of evidence that cannabis use may be associated with greater brain volume and cognitive performance in aging adults.”
“Our results indicate that older adults who reported using cannabis in the prior six months did not differ on neuropsychological testing results when compared to older adults who reported no recent use of cannabis.”
Researchers determined that participants with a history of cannabis use experienced “significantly less cognitive decline” over their lifetimes than did non-users.
“Our results suggest that adults who use cannabis … experience few significant long-term neural associations in these areas of cognition.”
Occasional cannabis use during late adolescence is not independently associated with adverse effects on cognitive abilities in young adulthood, according to study.
The use of cannabis during adolescence is not associated with structural brain differences in adulthood, according to longitudinal data published in the journal Drug and Alcohol Dependence. Researchers concluded, “[T]he patterns of cannabis use typically seen in community-dwelling adolescents does not appear to have lasting effects on brain structure.”
Cannabis exposure is not associated with significant changes in brain morphology in either older or younger subjects, according to a pair of newly published studies.