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Daily Marijuana Use May Protect the Brain from Aging, Says Study


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Researchers think that using marijuana may help sharpen the brain in the later years of life. The University of Bonn and Hebrew University found that low doses of THC, given on a regular basis, may prevent the brain from slowing down as people age.

A study conducted on mice showed that older mice displayed increased performance, according to Forbes. Young animals tested better sober, similar to human performance, while older or mature mice had difficulty with those same tasks while sober. When THC was introduced, performance increased exponentially.

In older mice and humans, stimulating the endocannabinoid system in the brain prevents it from becoming less active later in life.

Researchers said, “Together, these results reveal a profound, long-lasting improvement of cognitive performance resulting from a low dose of THC treatment in mature and old animals.”

Further exploration of THC’s impact on aging human brains is planned for later in 2017. One focus will be to include more aging participants. Universities of Bonn and Mainz’s previous research suggest that the brain’s main marijuana receptor/neural pathways relate to brain health in an aging brain. THC played a role in preventing brain degeneration while active.

Andras Bilkei-Gorzo, a co-author of the study, said, “If we can rejuvenate the brain so that everybody gets five to 10 more years without needing extra care then that is more than we could have imagined.”


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Arizona legalized marijuana for recreational use in November 2020. The law allows adults aged 21+ to purchase, possess and use cannabis. State-licensed cannabis dispensaries began selling recreational marijuana in early 2021. There are over 150 dispensaries in Arizona — a majority of them are in populous areas such as Phoenix, Tucson and Flagstaff. Recreational cannabis delivery services began operating in 2024.  


AZ Cannabis Updates