FRIDAY, Sept. 6, 2019 (HealthDay News) -- Marijuana use by U.S. college students in 2018 was the highest in 35 years, researchers report.
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Their survey of about 1,400 respondents, ages 19 to 22, found that about 43% of full-time college students said they used some form of marijuana at least once in the past year, up from 38% in 2017, and previous month use rose to 25% from 21%, the Associated Press reported Thursday.
The 2018 rates are the highest found in the annual University of Michigan survey since 1983.
About 6% of college students said they used marijuana 20 or more times in the past month, compared with 11% of respondents the same age who weren't in college, the AP reported.
"It's the frequent use we're most worried about" because it's associated with poor school performance and can harm mental health, researcher John Schulenberg said.
In the United States, marijuana use is greater among college-age adults than any other age group, the AP reported.
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