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Doctors In RVs · Aug 2, 2026

Cannabinoid Hyperemesis Syndrome: What Heavy Marijuana Users Need to Know

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Alfred Ricks Jr MD · Doctors In RVs

Cannabinoid hyperemesis syndrome (CHS) affects approximately one-third of people who smoke cannabis 20 days or more per month, yet many heavy marijuana users remain unaware of this condition. Studies show that 32.9% of frequent marijuana users seeking emergency care met the criteria for CHS. Emergency department visits for cyclic vomiting have doubled since cannabis legalization. This makes CHS a growing health concern.

This piece covers what is cannabinoid hyperemesis syndrome, cannabinoid hyperemesis syndrome symptoms to watch for, and cannabinoid hyperemesis syndrome treatment options that can help heavy users protect their health.

What is Cannabinoid Hyperemesis Syndrome

Definition and Overview

Cannabis hyperemesis syndrome (CHS) causes repeated and severe bouts of nausea, vomiting, and abdominal pain in daily, long-term marijuana users. The condition develops only among those who have used marijuana for years, on a daily basis. Symptoms of CHS appear after 10 to 12 years of chronic use and often affect those who use the drug at least once a day.

The syndrome presents a medical paradox. Marijuana prevents nausea and vomiting in the brain, which explains its use as an antiemetic for chemotherapy patients. But the digestive tract experiences the opposite effect. The condition shows up as cyclical episodes where severe stomach pain and vomiting last for days, only to stop and reemerge weeks or months later.

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Dr. Ricks

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