24-Hour Crisis Hotline: (877)SAFEGBC or (877)723-3422 Mental Health & Substance Abuse Issues

6502 Nursery Drive, Suite 100
Victoria, TX 77904
(361)575-0611
(800)421-8825
Fax: (361)578-5500

Wellness and Personal Development
Resources
Basic InformationLatest News
Protect Yourself From Sun to Prevent Skin CancerAs a Nation's Worth Grows, So Do WaistlinesBike-Sharing Gets Commuters Out of Cars: StudyBanishing Pandemic Worries for a Good Night's SleepAs Summer Starts, Sun Safety Slashes Skin Cancer RiskDuring the Pandemic, How Safe Is the Great American Summer Vacation?AHA News: A Silver Lining for Foster, Adopted Pets – and Their People – During Coronavirus PandemicEven One High-Fat Meal May Dull Your MindDon't Let the Coronavirus Pandemic Rob You of Your SleepMore Trees, Parks May Mean Longer Lives for City DwellersReckless Driving on the Rise During COVID-19 PandemicTips to Keeping Slim When You're Stuck at HomeMoney Not a Good Measure of Your Self-WorthWhich Foods Might Reduce Your Odds for Dementia?Ride-Sharing Services Tied to Rise in Car CrashesAmericans Got the Memo on Social Distancing, Poll ShowsA Consistent Bedtime Is Good for Your HeartAHA News: Eat Healthy, Move Your Body During Pandemic'Stress Eating' While Social Distancing? Here's Tips to Avoid ItStaying at Home During the Pandemic? Use Technology to Stay ConnectedSoaking in a Hot Bath Might Do Your Heart GoodIndoor Athletes Often Lacking in Vitamin DHow Many Steps Per Day to Lengthen Your Life?Can You Buy Happiness? Yes, Study Suggests, If You Spend on ExperiencesAHA News: Coronavirus News on Social Media Stressing You Out? Here's How to Handle the AnxietyDon't Abandon Healthy Eating During Coronavirus PandemicAHA News: 'Be Happy' Isn't So Simple, Especially Amid Coronavirus Worries – But It's Seriously Good for HealthHealthy Living at Home to Ward Off CoronavirusKeeping Coronavirus Anxiety at BaySquat, Don't Sit: Study of African Tribe Shows Why One Position Is HealthierWill a Jolt of Java Get Your Creative Juices Flowing?Get Ready for Clocks to 'Spring Ahead'Erratic Sleep Habits May Boost Risk of Heart Problems: StudyFish Oil May Help Prevent Heart Disease, But Not Cancer: StudyDirty Air Cuts Millions of Lives Short Worldwide: StudyWant to Help Keep Diabetes at Bay? Brush & FlossAre Your Vaccinations Up to Date?Healthy Heart in Your 20s, Healthier Brain Decades LaterMore Than 4 in 10 Americans Are Now Obese: CDCHeading to Work on a Bike? You Might Live LongerIs Your Smartphone or Tablet an Injury Risk?How Safe Is It to Fly?Variety is Key for the Fittest AmericansFor Tracking Steps, Patients Stick With Phones, Not Wearable Devices: StudySocial Media Stokes Myths About Vaccines5 Expert Tips for Preventing Winter Sports AccidentsMany Americans Lack Knowledge, Not Desire, to Eat Plant-Based Diets'Couch Potato' Lifestyle Poses Danger to Women's Hearts5 Secrets to an Allergy-Free Valentine's DayRestful Romance: Smelling Your Lover's Shirt Can Help You Sleep
Links
Related Topics

Anger Management
Stress Reduction and Management

Pot-Using Drivers Still Impaired After the High Fades

HealthDay News
by -- Robert Preidt
Updated: Jan 15th 2020

new article illustration

TUESDAY, Jan. 14, 2020 (HealthDay News) -- Even when they're not high on marijuana, recreational users of the drug display signs of impaired driving, a new study finds.

The findings may come as a surprise to many, said senior study author Staci Gruber, director of Marijuana Investigations for Neuroscientific Discovery (MIND) at McLean Hospital, a Harvard Medical School affiliate in Belmont, Mass.

"People who use cannabis don't necessarily assume that they may drive differently, even when they're not high," Gruber said in a hospital news release. "We're not suggesting that everyone who uses cannabis will demonstrate impaired driving, but it's interesting that in a sample of non-intoxicated participants, there are still differences in those who use cannabis relative to those who don't."

Gruber and her colleagues looked at marijuana users and nonusers whose driving performance was assessed on a driving simulator. At the time they used the simulator, the users had not used marijuana for at least 12 hours and were not intoxicated.

Compared to nonusers, heavy marijuana users had worse driving performance during the test. For example, they hit more simulated pedestrians, went over the speed limit more often, made fewer stops at red lights, and crossed the center line more often.

The researchers also found that the start of marijuana use before age 16 was associated with worse performance on the driving simulator.

The study was published Jan. 14 in the journal Drug and Alcohol Dependence.

"What was interesting was when we examined impulsivity in our analyses, most of the differences we saw between cannabis users and healthy controls went away, suggesting that impulsivity may play a role in performance differences," said study co-author Mary Kathryn Dahlgren, a McLean research fellow.

In states where marijuana is legal, there's growing public concern that more people will drive while high. But this study shows that driving can be impaired even in marijuana users who aren't high and that the public needs to reconsider its understanding of impairment.

"It's important to be mindful that whether someone is acutely intoxicated, or a heavy recreational cannabis user who's not intoxicated, there may be an impact on driving, but certainly not everyone demonstrates impairment simply as a function of exposure to cannabis," Gruber said.

"This is especially important to keep in mind given increasing numbers of medical cannabis patients, who differ from recreational users with regard to product choice and goal of use," she added.

More information

The U.S. National Institute on Drug Abuse has more about drugged driving.