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Depression, inequity may accelerate aging: study

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A new Canadian-led study has found that feeling depressed, along with living in a disadvantaged neighbourhood, may lead to premature aging.

The peer-reviewed study, published on Monday in The Journals of Gerontology, Series A: Biological Sciences and Medical Sciences, points to how depression and living in an urban environment – with greater material and social inequities – can influence how a person ages.

Led by researchers at McMaster University in Hamilton, Ont., the study’s authors say this may occur “even after accounting for individual-level health and behavioural risk factors, such as chronic conditions and poor health behaviours.”

“This adds to the growing body of evidence that living in urban areas with higher levels of neighbourhood deprivation and having depression symptoms are both associated with premature biological aging,” team lead Parminder Raina, a professor in the Department of Health Research Methods, Evidence, and Impact at McMaster University, said in a news release.

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The researchers used epigenetic data from 1,445 people enrolled in the Canadian Longitudinal Study on Aging, a long-term study that follows about 50,000 participants between the ages of 45 and 85 for at least 20 years.

The study is described as examining how changing biological, medical, psychological, social, lifestyle and economic factors impact a person’s health as they age.

Epigenetics is the study of how behavior and environment can influence how a person’s genes work.

The researchers measured depression symptoms using a standardized 10-item scale.

They say a one-point increase in the score accelerated a person’s risk of death by one month, with the theory being that emotional distress caused by depression could lead to “more biological wear and tear and dysregulation of physiological systems.”

In order to measure “neighbourhood material and social deprivation,” the researchers used a pair of indices, based on the 2011 census, from the Canadian Urban Environmental Health Research Consortium.

They described material deprivation as a person’s inability to obtain resources such as adequate housing, nutritious food, a vehicle, high-speed internet or recreational facilities, while social deprivation refers to family and community connections.

The researchers say greater neighbourhood deprivation increased a person’s “risk of death by almost one year,” but did not worsen the effect that depression had on aging.

In other words, both were independently associated with premature aging.

“Our results showed that the effect of neighbourhood deprivation on epigenetic age acceleration was similar regardless of depression symptoms, suggesting that depression influences epigenetic age acceleration through mechanisms unrelated to neighbourhood deprivation,” Divya Joshi, first author of the study and a research associate at McMaster University, said.

The research team also included members from the Netherlands, Norway and Switzerland.

 

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RCMP warn about benzodiazepine-laced fentanyl tied to overdose in Alberta – Edmonton Journal

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Grande Prairie RCMP issued a warning Friday after it was revealed fentanyl linked to a deadly overdose was mixed with a chemical that doesn’t respond to naloxone treatment.

The drugs were initially seized on Feb. 28 after a fatal overdose, and this week, Health Canada reported back to Mounties that the fentanyl had been mixed with Bromazolam, which is a benzodiazepine.

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Mounties say this is the first recorded instance of Bromazolam in Alberta. The drug has previously been linked to nine fatal overdoses in New Brunswick in 2022.

The pills seized in Alberta were oval-shaped and stamped with “20” and “SS,” though Mounties say it can come in other forms.

Naloxone treatment, given in many cases of opioid toxicity, is not effective in reversing the effects of Bromazalam, Mounties said, and therefore, any fentanyl mixed with the benzodiazepine “would see a reduced effectiveness of naloxone, requiring the use of additional doses and may still result in a fatality.”

Photo of benzodiazepine-laced fentanyl seized earlier this year by Grande Prairie RCMP after a fatal overdose. edm

From January to November of last year, there were 1,706 opioid-related deaths in Alberta, and 57 linked to benzodiazepine, up from 1,375 and 43, respectively, in 2022.

Mounties say officers responded to about 1,100 opioid-related calls for service, last year with a third of those proving fatal. RCMP officers also used naloxone 67 times while in the field, a jump of nearly a third over the previous year.

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CFIA continues surveillance for HPAI in cattle, while sticking with original name for disease – RealAgriculture

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The Canada Food Inspection Agency will continue to refer to highly pathogenic avian influenza in cattle as HPAI in cattle, and not refer to it as bovine influenza A virus (BIAV), as suggested by the American Association of Bovine Practitioners earlier this month.

Dr. Martin Appelt, senior director for the Canadian Food Inspection Agency, in the interview below, says at this time Canada will stick with “HPAI in cattle” when referencing the disease that’s been confirmed in dairy cattle in multiple states in the U.S.

The CFIA’s naming policy is consistent with the agency’s U.S. counterparts’, as the U.S. Animal and Plant Health Inspection Service has also said it will continue referring to it as HPAI or H5N1.

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Appelt explains how the CFIA is learning from the U.S. experience to-date, and how it is working with veterinarians across Canada to stay vigilant for signs of the disease in dairy and beef cattle.

As of April 19, there has not been a confirmed case of HPAI in cattle in Canada. Appelt says it’s too soon to say if an eventual positive case will significantly restrict animal movement, as is the case with positive poultry cases.

This is a major concern for the cattle industry, as beef cattle especially move north and south across the U.S. border by the thousands. Appelt says that CFIA will address an infection in each species differently in conjunction with how the disease is spread and the threat to neighbouring farms or livestock.

Currently, provincial dairy organizations have advised producers to postpone any non-essential tours of dairy barns, as a precaution, in addition to other biosecurity measures to reduce the risk of cattle contracting HPAI.

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Toronto reports 2 more measles cases. Use our tool to check the spread in Canada – Toronto Star

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Canada has seen a concerning rise in measles cases in the first months of 2024.

By the third week of March, the country had already recorded more than three times the number of cases as all of last year. Canada had just 12 cases of measles in 2023, up from three in 2022.

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