Even when they're not high, recreational marijuana users display signs of impaired driving, a new study finds.
The researchers also found that the start of marijuana use before age 16 was associated with worse performance on the driving simulator."What was interesting was when we examined impulsivity in our analyses, most of the differences we saw between cannabis users and healthy controls went away, suggesting that impulsivity may play a role in performance differences," said study co-author Mary Kathryn Dahlgren, a McLean research fellow.
In states where marijuana is legal, there's growing public concern that more people will drive while high. But this study shows that driving can be impaired even in marijuana users who aren't high and that the public needs to reconsider its understanding of impairment. "It's important to be mindful that whether someone is acutely intoxicated, or a heavy recreational cannabis user who's not intoxicated, there may be an impact on driving, but certainly not everyone demonstrates impairment simply as a function of exposure to cannabis," Gruber said.
"This is especially important to keep in mind given increasing numbers of medical cannabis patients, who differ from recreational users with regard to product choice and goal of use," she added.Copyright © 2013-2018 HealthDay. All rights reserved.
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