Smoking vomit

I see the NYT has a story about an increase in a painful vomiting syndrome caused by heavy cannabis use:

“After marijuana was legalized in Colorado, we had a doubling in the number of cases of cyclic vomiting syndrome we saw,” many of which were probably related to marijuana use, said Dr. Cecilia J. Sorensen, an emergency room doctor at University of Colorado Hospital at the Anschutz medical campus in Aurora who has studied the syndrome.

“C.H.S. went from being something we didn’t know about and never talked about to a very common problem over the last five years,” said Dr. Eric Lavonas, director of emergency medicine at Denver Health and a spokesman for the American College of Emergency Physicians.

Now a new study, based on interviews with 2,127 adult emergency room patients under 50 at Bellevue, a large public hospital in New York City, found that of the 155 patients who said they smoked marijuana at least 20 days a month, 51 heavy users said they had during the past six months experienced nausea and vomiting that were specifically relieved by hot showers.

Googling the topic, I see that it has the been subject of many stories in the last few years, but I don't think I've posted about it before.

Apart from this particular problem, I find it hard to believe that such regular users don't have some other effect on their health and lives as well.   (Although heavy users do develop a tolerance to the intoxication effect, if I recall correctly.)