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Marijuana Users Have ‘Enhanced Cognitive Abilities,’ Large Federally Funded Study Shows
Marijuana users have “superior performance across multiple cognitive domains,” according to a new large-scale study funded by the U.S. federal government, with the effects of cannabis on cognition “presented concurrently across a range of brain systems.”
The research, published this month as a preprint by Nature Portfolio, analyzed brain imaging and cognitive data from 37,929 participants in the United Kingdom aged between 44 and 81 years old. The team found that cannabis consumers consistently outperformed non-users on a range of cognitive tests—suggesting that marijuana use may be linked to brain network patterns typically observed in younger individuals.
“These findings suggest that cannabis use may be associated with a deceleration of neural aging processes and the preservation of cognitive function in older adults,” the paper says.
Yet another study published by the American Medical Association (AMA) last year that looked at data from more than 63 million health insurance beneficiaries determined that there’s “no statistically significant increase” in psychosis-related diagnoses in states that have legalized marijuana compared to those that continue to criminalize cannabis.
Studies from 2018, meanwhile, found that marijuana may actually increase working memory and that cannabis use doesn’t actually change the structure of the brain.
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