According to a report by Business Insider, very little is known about cannabinoid hyperemisis syndrome, better known as CHS, a condition that links heavy marijuana use to violent vomiting and nausea. CHS was reportedly first identified in the early 2000s, and was thought to be far rarer than scientists now believe. Business Insider reports that there is no cure for the disease, and the only long-lasting treatment is quitting cannabis completely. Dr. Nora Volkow, the director of the National Institute on Drug Abuse, wrote recently in a major medical journal, "We must recognize that the full range of potential adverse health consequences from cannabis consumption are not fully understood."

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