43% of 5,000 young adults between the ages of 19 and 30 surveyed said they had used marijuana in the past year, compared to 34% in 2016 and 29% in 2011, according to the University of Michigan's "Monitoring the Future" study. , published on Monday.
29% of respondents said they had used marijuana in the past month in 2021, compared to 21% in 2016 and 17% in 2011.
Daily consumption has almost doubled in ten years, rising from 6% in 2011 to 11% in 2021.
According to the authors of this work, funded by the American Institutes of Health (NIH), the levels of marijuana use in 2021 are "the highest on record since the recording of these trends began in 1988".
As for hallucinogens, 8% of young adults reported having taken LSD, MDMA (active ingredient in ecstasy), mescaline, peyote, mushrooms or PCP in 2021, compared to 5% in 2016 and 3% in 2011.
Nearly 82% of respondents said they had drunk alcohol in the last twelve months, which is a slight decrease compared to 2016 (83.5%) and 2011 (83.8%).
The study didn't detail the reasons behind the rising usage figures, but recreational cannabis is now legal in nearly 20 states across the country.
© 2022 AFP