Teens driving under influence of marijuana: Study finds

Published on February 26, 2012 at 5:10 PM · 3 Comments

By Dr Ananya Mandal, MD

According to a new survey too many teenagers are driving under the influence of marijuana believing it to be less dangerous than driving drunk.

The survey was conducted by Liberty Mutual Insurance and Students Against Destructive Decisions (SADD). They looked at 2,300 eleventh and twelfth graders and found more than one-third of teens who have driven after using marijuana say the drug doesn't distract them from driving. What's more, one in five teens admitted to driving high. In addition the survey found 13 percent of teens said they had got behind the wheel after drinking, while 19 percent did not consider drinking a major distraction.

“Marijuana affects memory, judgment, and perception and can lead to poor decisions when a teen under the influence of this or other drugs gets behind the wheel of a car,” Stephen Wallace, senior advisor for policy, research, and education at SADD, said in a written statement. “What keeps me up at night is that this data reflects a dangerous trend toward the acceptance of marijuana and other substances compared to our study of teens conducted just two years ago.” A 2009 survey from Liberty Mutual and SADD found 78 percent of teens considered smoking pot as “very” or “extremely” distracting to their driving.

According to the National Institute on Drug Abuse, using marijuana can cause distorted perceptions, impaired coordination, difficulty with thinking and problem solving, and problems with learning and memory.

About 90 percent of teen drivers in the latest survey said they wouldn't drive high if asked by their passengers. But only 72 percent of teen passengers said they'd say something to a driver who has used marijuana, compared with 87 percent who would speak up if the driver had consumed alcohol. Wallace told USA Today the survey's findings were “disturbing.” “We hear from young people who believe that marijuana actually makes them a safer driver, that they concentrate harder, drive slower,” he said.

The study highlights the need “to get the message out about the dangers of marijuana impairment,” says Tom Hedrick of The Partnership at Drugfree.org, an advocacy group that was not involved in the study. “It's a wake-up call for parents about the importance of having this conversation” with their teens.

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  1. Matt Scinto Matt Scinto United States says:

    Just so all of you know, traffic accidents in states that allow medical marijuana have nearly a 9 percent lower accident rate.

    • Anon Anon United States says:

      I agree on the lower accident rate.

      Marijuana does not impair your driving.

      It's bs, complete bs.

      I use to have road rage at 15 1/2 y/o, numbnut drivers will do that to you, pop a joint in your mouse, smoke it up, your road rage is gone. In fact, I found by smoking up, I was more cautious at driving and more focused.

      Alcohol, on the other hand, does impair your driving, everyone knows this. Marijuana does not, wish this propaganda would screw off.

    • Mike Mike United States says:

      Marijuana and Mental Health

      A number of studies have shown an association between chronic marijuana use and increased rates of anxiety, depression, and schizophrenia. Some of these studies have shown age at first use to be an important risk factor, where early use is a marker of increased vulnerability to later problems. However, at this time, it is not clear whether marijuana use causes mental problems, exacerbates them, or reflects an attempt to self-medicate symptoms already in existence.

      Just though that maybe this might help Matt if he really believes what he wrote.

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