Buzz
While cannabis is widely known for its ability to alleviate nausea, overconsumption can actually trigger the opposite effect in some individuals. This rare condition, referred to as cannabinoid hyperemesis syndrome (CHS), involves severe nausea, vomiting, and abdominal discomfort, often relieved temporarily by a hot shower.
This condition has only recently been identified by scientists, and it remains uncommon. However, it is often difficult to diagnose as many healthcare providers are unfamiliar with it, and many cannabis users are reluctant to believe that something they've used for years could suddenly cause health issues.
A recent study revealed that CHS may be more widespread than previously thought. Researchers conducted a survey with patients in a New York City emergency room who were there for unrelated reasons and not currently experiencing nausea. (Nausea can be caused by various medical conditions, so they aimed to eliminate other possibilities. CHS symptoms tend to come and go.)
Out of 155 participants who reported using cannabis at least 20 days a month, 33 percent stated that hot showers helped them alleviate nausea. If these findings reflect the general cannabis user population, it suggests that millions of people in the US may suffer from CHS, many of whom are likely unaware of their condition.
The exact cause of CHS remains unknown, as does the reason why hot showers seem to provide relief. Our digestive system contains receptors for endocannabinoids, the natural chemicals produced by our bodies that cannabis mimics. Additionally, the hypothalamus, a brain region responsible for regulating body temperature, also contains cannabinoid receptors, suggesting a possible link between this brain area and the relief provided by hot showers.
If you suspect you may have CHS, it’s important to get a proper diagnosis—your nausea might be due to something else. However, if cannabis is indeed the cause, the only known remedy is to stop using it. You can read more about cannabinoid hyperemesis syndrome here for further information.
