CNN —It’s 420 or “weed day,” and people around the world will be paying homage to their favorite guilty pleasure: marijuana. “I worry when people are in an enclosed space because new data is beginning to show that secondhand marijuana smoke may be just as dangerous as the primary smoke,” Page said. “Approximately 3 in 10 people who use marijuana have marijuana use disorder,” according to the US Centers for Disease Control and Prevention. In fact, some parents told doctors they believed vaping marijuana was safer than tobacco, Boyd told CNN earlier via email. A cloud of marijuana smoke rises as a clock hits 4:20 p.m. during the Mile High 420 Festival in Denver on "weed day" in 2022.

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Persons: CNN —, Dr, Beth Cohen, Cohen, “, ”, Robert Page II, ” Page, Weed, It’s, ’ ” Carol Boyd, Ann Arbor, Peter Grinspoon, ” Young, Sam Wang, Boyd, Grinspoon, Patrick T, Fallon, Nixon, ” Boyd, ” Grinspoon, ’ ”, Page Organizations: CNN, District of Columbia, University of California, University of Colorado Skaggs School of Pharmacy, Pharmaceutical Sciences, Center, Drugs, University of Michigan, US Centers for Disease Control, Prevention, CDC, Massachusetts General Hospital, Marijuana, Children’s Hospital, Yale Medicine, Drug, University of Colorado’s, Getty, University of Mississippi, US Drug, Administration Locations: United States, San Francisco, Colorado, Aurora, Ann, Boston, Children’s Hospital Colorado, Denver, AFP