Nearly Half Of Fatal Car Accidents Linked To Use Of A Single Drug
By iHeartRadio
October 7, 2025
A recent study reveals that over 40% of drivers who died in vehicle crashes had elevated levels of THC, the psychoactive compound in marijuana, in their blood. The study, conducted by Wright State University and presented at the American College of Surgeons Clinical Congress in Chicago, analyzed data from 246 deceased drivers in Montgomery County, Ohio, over a six-year period. The average THC level found was 30.7 ng/mL, significantly exceeding most state impairment limits, which range from 2 to 5 ng/mL.
Lead author Akpofure P. Ekeh, a professor of surgery at Wright State University, emphasized that these high levels indicate recent marijuana use, not residual presence. The study highlights the persistent public health risk posed by driving under the influence of marijuana, despite the legalization of recreational cannabis in many states, including Ohio in 2023.
Experts, including Dr. Laura Markley from Akron Children’s in Ohio, told Fox News that THC impairs reaction time, judgment, and coordination, increasing the likelihood of fatal accidents. Markley noted that even those with high THC tolerance experience impaired driving abilities. The study calls for stronger messaging about the dangers of driving while high, akin to warnings against drunk driving.
The research underscores the need for public awareness and policy measures to address the risks associated with marijuana use and driving.