More than 40% of drivers reporting alcohol and cannabis use in a national survey also reported driving under the influence of one or both of the substances, a new study found
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"Alcohol and cannabis are two of the most common substances involved in impaired driving and motor vehicle crashes" in the United States, said Priscila Dib Gonçalves, the study's first author, in a news release. Gonçalves is a postdoctoral research fellow in the epidemiology department at Columbia University's Mailman School of Public Health.
People who use alcohol or cannabis should know that these drugs can cause"a decrease in someone's ability to respond to things that are happening on the road, even at lower levels" of use, said Linda Degutis, a lecturer at the Yale School of Public Health and past president of the American Public Health Association, who wasn't involved in the study.
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