I used cannabis for nausea without realizing it might actually have been the cause of it. Cannabinoid hyperemesis syndrome (also known as cannabis hyperemesis syndrome, or CHS) is a recently discovered, poorly understood condition theoretically caused by heavy, long-term cannabis use. Its acute “hyperemetic” phase is characterized by vomiting, nausea, severe gastrointestinal discomfort, and compulsive bathing, although it may be preceded by a period of milder symptoms like morning nausea, consistent urges to vomit, and abdominal pain.
When I read about this condition in a 2011 study from Temple University, I nearly fell out of my chair. I’ve been using cannabis medicinally for the last five years to treat morning sickness, nausea, and intestinal pain. A conversation with an ex came to mind. He used to antagonistically pose theories that cannabis might be what’s causing the problems, to which I would respond with a heated and defensive, “Cannabis is