Danielle McCartney is a Postdoctoral Research Associate at the Lambert Initiative for Cannabinoid Therapeutics at the University of Sydney. Her main role is to coordinate clinical research into the effects of cannabidiol on simulated car driving performance. 



Danielle and her colleagues recently published a systematic review of 20 studies that examine the next-day effects of THC. As the study states, “The length of time an individual should wait following cannabis use before performing safety-sensitive tasks, is a critical issue.” Some government agencies and experts recommend individuals avoid performing safety-sensitive tasks for at least 24 hours. It should not surprise you to learn that the data suggests a much shorter impairment window.



During our conversation, we discuss:




The different types of studies the authors reviewed and the criteria they used to evaluate them



The different tests administered to measure impairment



How next-day effects of THC compare to acute effects



How next-day effects are different in medicinal cannabis patients vs. recreational users



What methods are available to determine THC impairment in drivers



What is a reasonable impairment window for THC




Thank You to This Episode's Sponsor: Medicine Women Health



Medicine Women’s team of specialists includes Medical Doctors, Naturopaths, Medical Cannabis Experts, Nutritionists and Alternative Health Practitioners. These integrative teams evaluate health issues and design targeted protocols to promote personal healing. Medicine Women’s Protocols have successfully alleviated symptoms of Cancer, Auto-Immune Diseases and Neurological Conditions, as well as providing overall Health Rejuvenation.



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Additional Resources




The “Next Day” Effects of Cannabis Use: A Systematic Review



Determining the magnitude and duration of acute Δ9-tetrahydrocannabinol (Δ9-THC)-induced driving and cognitive impairment: A systematic and meta-analytic review



Lambert Initiative for Cannabinoid Therapeutics



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