Relaxed Marijuana Laws in Two U.S. States Linked to Vomiting Syndrome

Relaxed Marijuana Laws in Two U.S. States Linked to Vomiting Syndrome
A man smokes marijuana in a file photo in Paris, France on May 14, 2016. Kenzo Tribouillard/AFP/Getty Images
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Ever since the U.S. states of California and Colorado relaxed their marijuana laws, some emergency physicians are seeing more vomiting episodes brought on by so-called cannabinoid hyperemesis syndrome.
Doctors in both states spoke with NPR about what they say is a growing problem which affects some heavy marijuana users who smoke the drug multiple times a day.