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Heavy cannabis use increases risk of developing an anxiety disorder, study suggests
February 5, 2024
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Twenty-seven percent of individuals who had an emergency department visit for cannabis use developed a new anxiety disorder within three years, according to new research.
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Emergency department visits for substance use linked to higher risk of developing schizophrenia
September 27, 2023
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People visiting the emergency department (ED) for substance use—particularly cannabis—are at high risk of developing schizophrenia, according to new research.
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Commercialization of cannabis linked to increased traffic injuries
September 6, 2023
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Annual rates of emergency department visits for cannabis-involved traffic injury increased by 475 percent over 13 years, according to a new study from The Ottawa Hospital, Bruyère Research Institute, and ICES.
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Emergency department visits and hospitalizations for cannabis use during pregnancy almost doubled since legalization
May 23, 2023
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The number of pregnancies that required treatment for cannabis use in the emergency department (ED) or during a hospitalization in Ontario increased by 82% (from 11 to 20 per 100,000 pregnancies) following legalization.
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Cannabis smokers show higher rates of emphysema, airway diseases than cigarette smokers
November 15, 2022
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The findings, published in Radiology, examined the chest CTs of 56 cannabis smokers, 57 non-smokers and 33 tobacco-only smokers between 2005 and 2020.
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Hospitalizations for unintentional cannabis poisonings among Canadian children surged after legalization, particularly in jurisdictions where the sale of cannabis edibles was allowed
August 24, 2022
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Canada has seen a 6.3 fold increase in hospitalizations for unintentional cannabis poisoning among children under the age of 10 since the legalization of recreational cannabis, according to a research letter published in the New England Journal of Me
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Cannabis-related emergency department visits increased significantly in Ontario after expansion of the cannabis retail market
February 16, 2022
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A study published today in the journal Addiction examined cannabis-related emergency department visits in Ontario before and after the legalization of recreational cannabis in Canada in October 2018.
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Cannabis poisoning in young children increased nine times after legalization
January 7, 2022
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Ontario saw nine times more emergency department (ED) visits per month for cannabis poisonings in young children under the age of 10 after Canada legalized recreational cannabis, according to a study published in JAMA Network Open.
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Changes in Canada’s cannabis retail market 2 years after legalization
August 16, 2021
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A recent study by public health researchers published in Drug and Alcohol Review documents the rapid expansion of the cannabis retail market in Canada in the two years following legalization.
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Cannabis use in pregnancy linked to a greater risk of autism
August 10, 2020
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In the largest study of its kind, researchers from The Ottawa Hospital, BORN Ontario and the University of Ottawa found that children whose mothers reported using cannabis during pregnancy were at greater risk of autism.
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Thinking about using cannabis during pregnancy? Think again.
September 16, 2019
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New research suggests that pregnant women who use cannabis have a greater risk of a preterm birth.
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Cannabis shops concentrate in low-income neighbourhoods
August 13, 2019
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Six months after recreational cannabis became legal in Canada, 260 cannabis shops had opened across the country, with twice as many concentrated in low-income neighbourhoods compared to high-income neighbourhoods. The results are published in CMAJ Op
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Cannabis use in pregnancy linked to increased risk of preterm birth
June 19, 2019
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Researchers from The Ottawa Hospital, CHEO, BORN Ontario and the University of Ottawa have conducted one of the largest studies to date on the effect of cannabis use during pregnancy. They found that reported cannabis use during pregnancy was associa
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