Recently, a new report from the Centers for Disease Control and Prevention (CDC) reveals a significant increase in emergency room visits associated with cannabinoid hyperemesis syndrome (CHS), a condition linked to frequent cannabis use.
Between January 2023 and the summer of 2025, nearly 200,000 emergency department visits related to the syndrome were recorded across approximately 7,500 medical facilities in the United States. Cases involve symptoms such as severe nausea, repeated vomiting, and abdominal pain.
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The increase has been particularly noticeable among teenagers and young adults. Researchers say questions remain about how products containing high concentrations of THC and other forms of cannabis may contribute to the development of the condition.
Why is this increase concerning to doctors?
Because cannabinoid hyperemesis syndrome can require emergency medical care and may have been underdiagnosed for years, making it difficult to determine its true prevalence.
The CDC continues to monitor the trend as cannabis use and the availability of high-potency products evolve across the United States.
