A study published in the journal Addiction by researchers from the University of Granada in Spain shows that vaporized cannabidiol (CBD) has little to no effect on visual function and driving performance.
The randomized, double-blind, placebo-controlled crossover experiment assessed whether CBD impacts the ability to drive safely.
The study involved 30 participants with an average age of 26.2 years, 70% of whom were male. All participants were occasional CBD or cannabis users and held valid driving licenses. Over three experimental sessions spaced a week apart, participants vaporized a placebo, 15% CBD (16 mg), or 30% CBD (32 mg). Driving performance was evaluated using an overall driving performance score (ODPS), while secondary outcomes included various visual function metrics and other driving parameters.
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