Cannabis Edibles Can Impair Driving, Even with Blood THC Below Legal Limits
Researchers found common cannabis edibles impaired lane control and reaction time, even as whole-blood THC levels stayed below or near roadside enforcement thresholds.
- A study published in JAMA Network Open found that consuming cannabis edibles significantly impairs driving performance, with deficits persisting even when blood THC levels remain below common legal enforcement thresholds.
- Researchers at the Johns Hopkins University School of Medicine designed the study because individuals increasingly co-use alcohol with edibles, yet previous research primarily focused on smoked cannabis, which spikes THC levels more rapidly than oral ingestion.
- Combining cannabis edibles with alcohol produces synergistic impairment, with participants demonstrating "more noticeable impairment, including slower speeds and increased lane variability and departures" compared to using either substance alone.
- Standard field sobriety tests often failed to detect this impairment, leaving policymakers searching for reliable roadside tools as current blood tests may not accurately identify unsafe drivers who consumed edibles.
- Public health officials emphasize the need for additional research to better understand these risks, noting that delayed absorption of edibles complicates law enforcement's interpretation of biological measures for impairment.
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Marijuana users may face hidden driving danger that standard tests can miss – Democratic Accent
A new study warns that driving after eating cannabis edibles can significantly impair road performance... The post Marijuana users may face hidden driving danger that standard tests can miss appeared first on Democratic Accent .
Hidden driving danger when edible cannabis and alcohol mix
Using cannabis edibles and alcohol together may make drivers far more impaired than either substance alone, according to new research from Johns Hopkins. Even more concerning, common field sobriety tests often failed to detect the cannabis-related impairment.
Cannabis edibles can impair driving, even with blood THC below legal limits
The feeling of being "high" on cannabis primarily comes from its psychoactive compound, delta-9-tetrahydrocannabinol, or THC. Alongside it is its more subdued companion, cannabidiol (CBD), often used for its potential therapeutic benefits. THC is also found in many familiar edibles, from soft, chewy candies to brownies and chocolates, and can affect the brain when consumed.
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