The New York Times – Hospital and emergency room patients diagnosed with cannabis use disorder — defined as an inability to stop using cannabis even when the drug is causing harm — died at almost three times the rate of individuals without the disorder over the next five years, according to a study published on Thursday, the largest on the subject.
They were also more likely to die from trauma, drug poisonings and lung cancer. Those numbers suggest that cannabis use disorder is about half as dangerous as opioid addiction and slightly less dangerous than alcohol use disorder, the researchers said.
A second report, published on Tuesday, found that more cases of schizophrenia and psychosis in Canada have been linked to cannabis use disorder since the drug was legalized.
“Many people think, ‘Oh, cannabis is not harmful — it’s organic, it’s natural; how great,’” said Dr. Laura Bierut, a psychiatrist at Washington University School of Medicine in St. Louis who is an author of an editorial accompanying the study of death risk. But the marijuana sold today is far more potent, and more harmful, than what baby boomers smoked in the 1960s and 1970s, she said.
“It is a public health threat just like alcohol,” Dr. Bierut said.
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Recent research suggests that three in 10 cannabis users will develop cannabis use disorder, defined as being unable to stop using cannabis even though it’s causing serious health and social problems.
As with alcohol, many people use marijuana recreationally without adverse effects or addiction.
The researchers took advantage of records in Ontario that capture millions of residents’ encounters with the government health system, which covers 97 percent of the population there …