A new study on marijuana has uncovered evidence that THC triggers 'highly divergent' psychological reactions in individuals based on which part of their brain is sensitive to the drug.
With marijuana now medically legal in 33 states and recreationally legal in 11 states , the concept of smoking, vaping, or eating it is fair game in the mainstream. But with lingering restrictions on testing it due to the Drug Enforcement Administration, how it affects the brain remains murky territory.
Thanks to a July 5 study out of Western University in Ontario, Canada, we may be one step closer to an answer. Published in Scientific Reports, the study is one of the few to explore what it deems the “divergent psychological effects” that marijuana’s psychoactive ingredient, tetrahydrocannabinol , produces — and to offer explanations for why this happens.
Steven R. Laviolette, PhD, one of the study’s researchers, tells Yahoo Lifestyle that the study embarked on new territory. “There is not too much known about why there is such differences in response to THC,” Laviolette says. “We know a lot about the longterm and short-term effects...But there is very little known about the specific areas in the brain that are responsible for independently controlling those effects.
The work is a departure from earlier attempts to explain the different psychological reactions, including a 2014 study from Oxford, which suggests that traits such as low self-esteem play a role. Norris and Laviolette’s study suggests instead that the reaction is beyond an individual’s control — and could be based more on genetics. For those who experience a bad reaction, this may be good news.
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