As marijuana legalization spreads across the country, people are consuming more of the drug, more often and at ever-higher potencies. Most of the tens of millions of people using marijuana, for health benefits or for fun, don't experience problems. But a growing number, mainly heavy users, have experienced addiction, psychosis and other harmful effects, The New York Times found.
"Cannabis is a lot of things at once," said Dr. Kevin Gray, a psychiatrist and specialist in bio-behavioral medicine at Medical University of South Carolina Health. "It can be medically therapeutic. It also can be highly problematic."
In interviews and surveys, hundreds of people told The Times about serious — sometimes frightening — symptoms that they were stunned to learn could be caused by cannabis. Here are some of their stories.
David Krumholtz, an actor known for films like "10 Things I Hate About You" and TV shows like "Numb3rs," resumed smoking marijuana in 2016, after a decade-long break. Within months, he started to experience cycles of intense nausea and vomiting — a sometimes debilitating condition called cannabinoid hyperemesis syndrome. It can lead to dehydration, seizures, kidney failure, cardiac arrest and even death in rare instances.
Interesting article. I'm pro legalization myself, but the issue with cannabis, is that it lacks the extensive peer reviewed research due to its long time illegality.
Hopefully, as legalization continues, that we learn more about the drug so folks can make informed decisions.
Moreover, like anything, it's a bell curve. We don't know how common these adverse affects are due to lack of research.
Larger article. It's a series:
Reporting methodology:
About 18 million people — nearly a third of all users ages 18 and up — have reported symptoms of cannabis use disorder, according to estimates from a unique data analysis conducted for The Times by a Columbia University epidemiologist. That would mean they continue to use the drug despite significant negative effects on their lives. Of those, about three million people are considered addicted.
The estimates are based on responses to the 2022 U.S. national drug use survey from people who reported any cannabis consumption within the previous year. The results are especially stark among 18- to 25-year-olds: More than 4.5 million use the drug daily or near daily, according to the estimates, and 81 percent of those users meet the criteria for the disorder.
"That means almost everybody that uses it every day is reporting problems with it," said Dr. Wilson Compton, deputy director of the National Institute on Drug Abuse, who was not involved in the analysis. "That is a very clear warning sign."
Marijuana is known for soothing nausea. But for some users, it has the opposite effect.
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