Andrew Monte has been researching the health impact of legal marijuana on the state of Colorado. (ABC News: Niall Lenihan)
It used to be a rare condition seen in only the most committed stoners: unrelenting extreme vomiting, nausea and abdominal pain brought on by years of regular marijuana consumption.
- Recreational marijuana became legal in Colorado in 2014
- The state has made nearly $US1 billion in revenue from marijuana taxes
- Fatal car crashes involving cannabis have doubled since 2014
But for emergency room doctors in Colorado, patients coming in with Cannabis Hyperemesis Syndrome (CHS) is now a…