Adolescents in California consistently perceive cannabis as less harmful than other commonly used substances, according to a new study analyzing data from two large statewide school surveys. Shu-Hong Zhu, Ph.D., professor at the UC San Diego Herbert Wertheim School of Public Health and Human Longevity Science and co-authors, examined how teens view the risks of everyday and occasional use of cannabis compared to alcohol, nicotine vapes and cigarettes, drawing on responses from more than 175,000 students across surveys conducted in 2019–2020 and 2024.
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