Legal guidelines legalising leisure marijuana could result in more visitors deaths, two new research recommend, though questions stay about how they could affect driving habits. Earlier analysis has had combined outcomes and the brand new research, printed Monday in JAMA Inside Drugs, can’t show that the visitors dying will increase they discovered have been brought on by marijuana use. One examine discovered an extra 75 visitors deaths per 12 months after retail gross sales started in Colorado in January 2014, in contrast with states with out related legal guidelines. However it discovered no related change in Washington state. The opposite examine checked out these states plus two others that enable leisure pot gross sales, Oregon and Alaska. If each state legalised leisure marijuana gross sales, an additional 6,800 individuals would die annually in visitors accidents, the researchers calculated. They discovered a rise of two deaths per billion miles travelled in contrast with 20 states with out these legal guidelines. That change was barely larger than within the different examine.
Each concerned a number of years of visitors dying information from the Nationwide Freeway Site visitors Security Administration earlier than and at the least two years after retail gross sales of leisure pot started within the states examined. These gross sales dates ranged from 2014 to 2016.
The research lack data on whether or not motorists have been stoned after they crashed. Marijuana can stay in tissues for a number of days so even when toxicology exams detected it after a deadly crash, that wouldn’t show the driving force was impaired, mentioned co-author Magdalena Cerda, a New York College researcher.
It’s attainable that leisure pot legal guidelines would possibly have an effect on drivers’ use of different medicine, together with alcohol, she famous.
“That’s an open query we have to reply in additional analysis,” Cerda mentioned.
A journal editorial mentioned more rigorous analysis is required together with research on how usually motorists use medicine.
“Clearly, introducing new authorized intoxicants has the potential to … result in deaths resulting from impaired driving,” the editorial mentioned.
Leisure marijuana is authorized in 11 states.
Variations in gross sales taxes, buy limits and different elements of marijuana legal guidelines in every state may play a task in any impression on visitors deaths. Additionally, when the two-state examine was performed, pot shops have been more densely situated in Colorado than in Washington, which may have made the drug more available, the authors mentioned.
The four-state examine, led by Dr. Russell Kamer of New York Medical Faculty, accounted for jobless charges, most pace legal guidelines and seat-belt legal guidelines. However the authors mentioned different components they didn’t take into account may have influenced visitors deaths.
(This story has been printed from a wire company feed with out modifications to the textual content. Solely the headline has been modified.)