People in the study who had been exposed to cannabis had a larger amount of grey matter in parts of the brain associated with emotion processing the amygdala and memory formation the hippocampus. They also had more grey matter in the areas which release of dopamine and feelings of euphoria the nucleus accumbens. Although low levels of cannabis use have caused changes to the brains of animals in laboratories, we can't be sure that's the case with the teenagers, who cannot be as strictly controlled as lab mice.
The study did control for lots of variables, including socioeconomic status, sex, and alcohol and nicotine use, but there may have been other causes. Many substances affect the brain, including nicotine and alcohol. In fact, Dr Orr said she believed alcohol was more "neurotoxical" than cannabis, meaning it was more poisonous to the nervous system.
Did it unlock unexpected feelings or sensations? Did you find a new perspective? Did you feel physically sick? Did uncomfortable emotions come up? Jackie Bryant is a freelance writer who focuses on cannabis, food, travel, and other culture topics.
Originally from New York, she now calls San Diego home. She also writes a newsletter and hosts a podcast , both about cannabis culture. More of her work can be found here.
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