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Smoking CBD-Rich Marijuana Does Not Impede Driving Ability, New Study Finds

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A new study has found “no significant impact” on the driving ability of participants who smoked CBD-rich marijuana with THC amounts that exceeded the legal limits of 0.3%. This was a pilot study that was conducted in Switzerland and included 33 participants. The participants were offered a joint with 500mg of tobacco infused with either 500 mg of CBD-rich marijuana or a placebo (herbal mix with a hemp aroma). The CBD- rich marijuana contained 16% CBD with 0.9% THC.

The CBD market in Switzerland has recently exploded and CBD- rich marijuana cigarettes are being used to facilitate tobacco-smoking cessation. The Swiss researchers were looking to understand the impact of CBD-rich marijuana products on driving.

Comparing the placebo and control groups, the researchers found no significant differences in reaction time, motor time, or concentration when driving. There was no notable driving impairment in either group.

The study involved 19 men and 14 women between the ages of 19 to 31. All the participants flipped a coin to determine whether they would receive the CBD-rich marijuana or the placebo. After 14 days, the test was repeated with those who had received the CBD-rich marijuana receiving the placebo and vice versa. The blood samples of the participants were collected to test for concentrations of THC metabolites.

Three parameters were used to determine fitness to drive:

  • Standing up with arms out and eyes closed and participants were asked to open their eyes after a duration of what they considered to be 30 seconds; the examiner recorded the actual elapsed time.
  • The finger-to-nose test with participants being asked to touch the tip of their nose with their finger
  • walk-and-turn test with heel-to-toe and hop around tests

Although there were slight differences between the two groups, the researchers concluded that “there was no significant influence from smoking CBD-rich marijuana driving performance.”

The THC concentrations from the THC metabolites in urine were at levels that had been shown to cause driving impairment in other studies. However, no significant impairment was observed in this particular study. From the findings, researchers also concluded that “higher CBD concentrations caused a negative allosteric effect in the endocannabinoid system, preventing the formation of such symptoms.”

The researchers concluded by recommending that drivers should desist from driving for long distances after consuming CBD-rich marijuana products. Higher levels of THC could impair driving in the long run. It would be advisable to have a per se limit of THC in CBD-rich marijuana products. There also needs to be adequate roadside tests to determine at which point (THC concentration in CBD-rich marijuana products) a driver’s driving ability is impaired.

 

Lydia K. (Bsc. RN) is a cannabis writer, which, considering where you’re reading this, makes perfect sense. Currently, she is a regular writer for Mace Media. In the past, she has written for MyBud, RX Leaf & Dine Magazine (Canada), CBDShopy (UK) and Cannavalate & Pharmadiol (Australia). She is best known for writing epic news articles and medical pieces. Occasionally, she deviates from news and science and creates humorous articles. And boy doesn't she love that! She equally enjoys ice cream, as should all right-thinking people.

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