Cannabis may impair driving ability for up to 4 hours, study finds
Fox News
Cannabis can impair a person’s ability to drive up to 4 hours after the drug is used, according to a recent study.
A group of researchers from the Center for Medicinal Cannabis Research at the University of California San Diego looked at 191 regular cannabis users and found that smoking cannabis led to significantly declined simulated driving scores, according to the authors of the two-year randomized trial study.
The participants were given either a placebo cigarette or a cannabis cigarette containing either 5.9 % or 13.4 % levels of delta-9-tetrahydrocannabinol (THC), the psychoactive compound in cannabis, the study said.
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