愛污传媒

Health

    • Cannabis use impacts cognitive ability beyond intoxication: study

    Share

    A new study has found that cannabis use in both recreational and chronic users can lead to persistent and severe acute cognitive impairments that may continue well beyond the period of intoxication.

    The systematic review of 10 papers and more than 43,00 participants, led by Canadian researchers and published Wednesday in the , found that cannabis intoxication can produce small to moderate cognitive impairments in areas such as decision making, suppressing inappropriate responses, and the overall time needed to complete a mental task.

    The review also found that the ability to remember what one reads or hears, as well as learning through reading and listening, were also impacted.

    "These acute impairments accord with documented residual effects, suggesting that the detrimental effects of cannabis persist beyond acute intake," the study's authors wrote.

    , cannabis is the third most commonly used psychoactive substance in the world, after alcohol and nicotine.

    In 2013, an estimated 181.8 million people globally aged 15-64 used cannabis for non-medical purposes, according to the WHO, with the highest rates of cannabis use reported among adolescents and young adults.

    According to researchers, meta-analyses were included in the review if they examined the effects of cannabis use on any neurocognitive domain and involved healthy individuals from the general population.

    The study's authors note they did not restrict the search to a specific cognitive impairment or a certain age group in order to "obtain a better overview of results."

    Study co-author Alexandre Dumais, associate clinical professor of psychiatry at the Universit茅 de Montr茅al, said in a press release that the findings suggest that the "damaging effects of cannabis" begin while it is being consumed, but can continue after that period.

    "Our study enabled us to highlight several areas of cognition impaired by cannabis use, including problems concentrating and difficulties remembering and learning, which may have considerable impact on users' daily lives," Dumais said in the release.

    Dumais noted that "numerous cognitive domains" are impacted by cannabis use, with the most notably being executive functions, verbal learning and memory, and processing speed.

    However, the review notes that these change based on people鈥檚 age and when they began using cannabis.

    "Cannabis use in youth may consequently lead to reduced educational attainment, and, in adults, to poor work performance and dangerous driving. These consequences may be worse in regular and heavy users," Dumais said.

    With recent changes in the legalization of cannabis around the world, the study's authors report that the public perceptions of its safety and acceptability are also changing.

    Because of this, researchers say it is important to understand the "cognitive risks" involved in using cannabis, especially for young people, whose brains are "undergoing significant developmental changes."

    To help mitigate the cognitive risks of cannabis use, researchers say health professionals should be informed of the potential risks and screen their patients for "problematic use." The study's authors said it may also be helpful to implement cognitive remediation programs in more severe cannabis users to try to improve cognition.

    As youths remain "particularly susceptible to the effects of cannabis," the study's authors say school settings should also put in place prevention and intervention measures to educate students on cannabis use and discourage them from using the substance in a chronic manner.

    Despite the findings, the study's authors say more research is needed to examine whether the cognitive deficits shown in performance-based tasks are also expressed in daily life, such as forgetting to carry through intended tasks, academic difficulties or work-related errors and car accidents.

    CTVNews.ca Top Stories

    The president and CEO of New Brunswick-based Covered Bridge Potato Chips is taking an 'extended leave of absence' after being charged with domestic violence this past weekend.

    A memorial is growing outside a Walmart in Halifax after a 19-year-old employee was found dead inside an oven in the store Saturday night.

    A search has started at Prairie Green Landfill for the remains of two victims of a serial killer.

    He is a familiar face to residents of a neighbourhood just west of Roncesvalles Avenue.

    Canada's discount airline is suspending operations to and from Saskatoon.

    A new report suggests that Canadians' exposure to a radioactive gas is increasing, putting millions of people at a higher risk of developing lung cancer.

    Canada

    • Two B.C. RCMP officers won鈥檛 face criminal charges for their use for force that left a man who had been arrested for public intoxication with a concussion, a torn shoulder and a chunk of his hair missing 鈥 but they could face professional discipline.

    • Speed was a possible factor in a Tuesday night rollover involving a semi-truck that left 17 cows dead. In a news release Wednesday, Calgary police said officers were called to the area of Stoney Trail S.E. and Macleod Trail S.E. around 8:10 p.m. for a reported rollover involving a semi-truck carrying 95 cattle.

    • A Real Canadian Superstore in B.C.'s Fraser Valley was evacuated Tuesday night due to a "suspicious" fire in the toilet paper aisle, according to authorities.

    • The president and CEO of New Brunswick-based Covered Bridge Potato Chips is taking an 'extended leave of absence' after being charged with domestic violence this past weekend.

    • He is a familiar face to residents of a neighbourhood just west of Roncesvalles Avenue.

    World

    Politics

    Health

    Sci-Tech

    • Vancouver Fire Rescue Services received its first shipment of new firefighting gear on Wednesday, advancing the department's plans to reduce cancer risk for its members.

    • A meteor lit up our region's sky last night 鈥 with a large fireball shooting across the horizon over Lake Erie at around 7:00 p.m.

    Entertainment

    Business

    • Canada's discount airline is suspending operations to and from Saskatoon.

    • Things could be looking up for Waterloo, Ont.-based company and former tech darling Sandvine, after being removed from the U.S. Department of Commerce Entity List earlier this week.

    Lifestyle

    • A new resident at a Manitoba animal rescue has waddled her way into people's hearts.

    • The Radium Hot Springs in British Columbia's Kootenay National Park has undergone a $29-million makeover.

    Sports

    Autos

    Local Spotlight

    He is a familiar face to residents of a neighbourhood just west of Roncesvalles Avenue.

    A meteor lit up our region's sky last night 鈥 with a large fireball shooting across the horizon over Lake Erie at around 7:00 p.m.

    Residents of Ottawa's Rideauview neighbourhood say an aggressive wild turkey has become a problem.

    A man who lost his life while trying to rescue people from floodwaters, and a 13-year-old boy who saved his family from a dog attack, are among the Nova Scotians who received a medal for bravery Tuesday.

    A newly minted Winnipegger is hoping a world record attempt will help bring awareness for the need for more pump track facilities in the city.

    A Springfield, Ont. man is being hailed a 'hero' after running into his burning home to save his two infant children.

    Hortense Anglin was the oldest graduate to make her way across the platform at York University's Fall Convocation ceremony this week. At the age of 87, she graduated with an Honours degree in Religious Studies.

    Looking for a scare with good intentions this Halloween season? The ghosts and ghouls of Eganville, Ont. invite families to tour the Haunted Walk at Lekbor Manor.

    The image of a sleepy Saskatchewan small town with 'not a lot going on' is a well-known anecdote. However, one Saskatchewan company is hoping to change that 鈥 and allow communities both on and off the beaten path to share their stories and advertise what they have to offer.

    • Legend has it that on a dark evening in 1988, friends of Supt. Joe Atherton quietly buried his body on the site of the old provincial RCMP headquarters in Vancouver.

    • Since the record-breaking atmospheric river hit Metro Vancouver last Friday, 266 drivers have filed ICBC claims for water damage to their vehicles. In some places, flood water was so deep, cars floated away with the drivers still inside, and the engine running.

    • Brittany La Torre and her husband Marc moved into their West Vancouver home just six months ago, but after last weekend's storm brought a torrent of muddy water and debris into their basement, knocking out power, they're not sure whether they'll be living in it six months from now.

    • He is a familiar face to residents of a neighbourhood just west of Roncesvalles Avenue.

    • Brampton is looking to the federal and provincial government to address the growing number of its vulnerable international students being exploited and trafficked.

    • A proposed inner-city apartment complex development by Anthem Properties is raising concerns for some residents of Hillhurst and West Hillhurst.

    • A new report suggests that Canadians' exposure to a radioactive gas is increasing, putting millions of people at a higher risk of developing lung cancer.

    • Speed was a possible factor in a Tuesday night rollover involving a semi-truck that left 17 cows dead. In a news release Wednesday, Calgary police said officers were called to the area of Stoney Trail S.E. and Macleod Trail S.E. around 8:10 p.m. for a reported rollover involving a semi-truck carrying 95 cattle.

    • NEW THIS MORNING

      NEW THIS MORNING

      The City of Ottawa is hoping to learn this week just how many residents in the capital are homeless.

    • One person has died and others have been injured after a two-vehicle collision involving a tractor trailer and a car on Highway 7 in eastern Ontario, according to police.

    • Homeowners with a variable rate mortgage in Ottawa can expect to see some savings thanks to a significant rate cut by the Bank of Canada.

    • A pedestrian is in critical condition after being struck by a car in Saint-Michel Wednesday evening.

    • Nigel Berkley and CRARR plan to file complaints with the police ethics commissioner and the human rights commission after Berkley was repeatedly stopped while driving his mother's car over four months.

    • Montreal Mayor Valerie Plante will not be seeking re-election.

    • An Edmonton tow truck operator has been charged after police say he refused to release a vehicle to its owner.

    • The City of Edmonton has a long road ahead to replace aging ice arenas as demand for ice time increases.

    • The leader of Alberta's Official Opposition rolled up his sleeves for his COVID-19 and flu shots today, opting to receive them in front of media because he's concerned about vaccine uptake.

    • A memorial is growing outside a Walmart in Halifax after a 19-year-old employee was found dead inside an oven in the store Saturday night.

    • The president and CEO of New Brunswick-based Covered Bridge Potato Chips is taking an 'extended leave of absence' after being charged with domestic violence this past weekend.

    • A volunteer treasurer is facing charges after funds went missing from Nova Scotia Premier Tim Houston鈥檚 riding.

    • A search has started at Prairie Green Landfill for the remains of two victims of a serial killer.

    • A 59-year-old man has died following a crash involving three vehicles that started after a tire fell off a car on the Trans-Canada Highway Wednesday morning in the RM of Tache.

    • A Manitoba inmate who was released from custody by mistake has been arrested, according to Winnipeg police.

    • Former Saskatchewan Party MLA Gary Grewal is defending his conduct and disagreeing with a recent report from the Conflict of Interest Commissioner (COIC) 鈥 which found he broke rules that prohibit MLAs from being involved with government contracts.

    • Southey RCMP say drivers should expect delays on Highway 6 Wednesday night after a serious crash.

    • Regina police says officers will provide an update Thursday in its search for the suspect of a homicide that took place in the city during the summer of 2023.

    • Detective Robert Hofstetter examined Erb鈥檚 home after her death and came to several conclusions based on the blood stains he found there.

    • A psychologist who recently assessed Geovanny Villalba-Aleman believes he may have experienced a psychotic break before stabbing three people in a gender studies class at a University of Waterloo.

    • Things could be looking up for Waterloo, Ont.-based company and former tech darling Sandvine, after being removed from the U.S. Department of Commerce Entity List earlier this week.

    • The race to form government is heating up ahead of the provincial election on Monday. Both the Saskatchewan NDP and the Saskatchewan Party feel they have the momentum as each leader has been focusing on different areas of the province as the campaign trail nears its end.

    • Canada's discount airline is suspending operations to and from Saskatoon.

    • The Saskatoon civic election is drawing closer, with mayoral candidates outlining their visions to keep the city competitive and attract businesses.

    • A Sudbury jury has found Felicity Altiman guilty of second-degree murder in the December 2020 stabbing death of a Sudbury man.

    • It only took minutes for North Bay pharmacist Brian Chute to be out $1,500 after fraudsters deceptively swapped his bank card with another.

    • The president and CEO of New Brunswick-based Covered Bridge Potato Chips is taking an 'extended leave of absence' after being charged with domestic violence this past weekend.

    • Under tough cross-examination at the London courthouse on Wednesday, Rachel Johnson, 21, was asked a number of times why there was a delay in calling 911

    • A 27-year-old man is miraculously alive after his pickup went over Hawk Cliff near Port Stanley. Fire fighters estimate that from the top to bottom of the embankment is around 270 feet.

    • OPP have confirmed that a transport truck driver crashed into a historic home just southeast of London this morning.

    • A haunted house in the Town of Innisfil is causing a real scare for some people a week before Halloween.

    • Barrie police conducted a search on Wednesday of the last place Autumn Shaganash was seen in hopes of giving her family some answers to her mysterious disappearance.

    • A 34-year-old motorcyclist has died following a collision in Barrie鈥檚 south end on Tuesday.

    • Windsor Fire and Rescue Services has been working to prepare for heightened HAZMAT risk ahead of relaxed restrictions around the transportation of some hazardous materials across the Ambassador Bridge.

    • As hospitals elsewhere in Ontario reintroduce mask mandates due to rising respiratory illnesses, Windsor hospitals are taking a more measured approach.

    • Now that production is set to begin at Windsor鈥檚 battery plant, NextStar is looking for some employees to make that production happen.

    • Two B.C. RCMP officers won鈥檛 face criminal charges for their use for force that left a man who had been arrested for public intoxication with a concussion, a torn shoulder and a chunk of his hair missing 鈥 but they could face professional discipline.

    • When 16-year-old Kaydence Bourque was struck and killed in a crosswalk on Cedar Hill Cross Road in Saanich in 2021, the community was shaken to the core.

    • A man who fired at least 19 gunshots at an RCMP detachment in northern British Columbia, narrowly missing officers inside, has won a reduced prison sentence from the province's highest court, which ruled the sentencing judge failed to fully weigh the man's mental illness at the time.

    • Dave Lindsey began growing giant pumpkins to bring a bit of magic to his grandkids' Halloween.

    • A U.S. District Court judge in Montana has sentenced a 27-year-old man from Kelowna, B.C., to 18 months in prison for using fake names to buy guns with the aim of selling them in Canada.

    • Nearly two years after a man was stabbed to death in downtown Kelowna, RCMP have made an arrest in the case.

    • Graduate students looking to become mental-health professionals will have more opportunities to study in the University of Lethbridge鈥檚 Master of Education Counselling Psychology program.

    • A dazzling light display is making its return to Lethbridge this holiday season.

    • As part of anniversary celebrations, the City of Lethbridge is inviting the community to see VisitLethbridge.com Arena like they never have before.

    • The lack of 24-hour public washrooms has been a long-standing issue in the Sault, especially considering the rise in homelessness.

    • The union representing the fire rangers with the Ministry of Natural Resources says money won鈥檛 fix the systemic problems in the workplace.

    • Rallies by a group called Voices Against Violence took place across the country on Monday, including Sault Ste. Marie.

    N.L.

    Shopping Trends

    The Shopping Trends team is independent of the journalists at 愛污传媒. We may earn a commission when you use our links to shop.聽Read about us.

    Stay Connected
    Follow 愛污传媒