![]() That means over 90 percent of people who smoke the high-potency will be OK," he says.When stress continues to accumulate in a person’s life and they don’t have the skills and resources to cope with it, eventually something will have to give. "We think about 5 percent of people will go psychotic instead of 1 percent. A recent study he published in The Lancet suggests that abusing marijuana with around 15 percent THC content, which is common among growers today, could quintuple the risk for schizophrenia. Murray says that only strengthens the case that cannabis increases the risk for schizophrenia. ![]() that may have to do with a much more potent marijuana." Black market, medical and recreational marijuana have all been steadily increasing their THC content over the past decade, and according to national emergency department data, visits involving cannabis increased 52 percent from 2004 to 2011. ![]() Volkow says there's been a "very dramatic increase. ![]() The fraction of people who have the disorder still hovers at around 1 percent.īut public health officials say they have seen an increase in the number of blazed people showing up to the emergency room in the grip of a fleeting psychotic episode. If the connection between weed and schizophrenia is solid, then the number of people with schizophrenia should also be going up. One thing to note, Lisdahl says, is that more people smoke cannabis today than ever in history. "Some experts believe that might induce schizophrenia in someone who wasn't vulnerable, but in my opinion that hasn't really been proven." "It does look like there is an increased risk for schizophrenia" from smoking weed overall, Lisdahl says. Shots - Health News Colorado Tries Hard To Convince Teens That Pot Is Bad For You But for someone without those genes, Volkow says the evidence suggests "you can smoke all the marijuana you want and it will make no difference whatsoever." " She says when people with certain risky genes associated with psychosis smoke, the risk of developing schizophrenia goes up sixfold, according to a 2005 study. "But what is also clear, if you do have a vulnerability to schizophrenia and you smoke ," Volkow says, "it's likely to trigger an episode. That makes it difficult to say if the people in these experiments developed schizophrenia because they were smoking weed or because of other factors. At least one other study found that people with schizophrenia were more likely to have a drug addiction in general. Cannabis smokers also are more likely to use other drugs, including ones that are known to induce brief psychotic episodes. There are other problems with these studies as well. It's only after you see all the patients that go psychotic that you realize – it's not so safe."Īround the Nation Getting High Safely: Aspen Launches Marijuana Education Campaign "Even I, 20 years ago, used to tell patients that cannabis is safe. Sir Robin Murray, a psychiatrist at King's College in London, says that evidence changed his mind about weed. There have been nine studies following hundreds to thousands of people for decades looking for a connection between marijuana use and psychosis.Īll but one of these studies suggest that marijuana use is associated with schizophrenia. Still, some researchers are convinced that marijuana contributes to the development of schizophrenia. "It's very distressing, but you'll get out of it." "You can have a psychotic episode from the use of marijuana without it turning into schizophrenia," Volkow says. But that's very different from a chronic, persistent psychotic disorder like schizophrenia. Drugs like marijuana or methamphetamine can make someone experience symptoms like paranoia, hostility and disorganized thinking. Volkow says it's important to make that distinction.
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