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Time to ditch your gas stove for health reasons? The answer is ‘murky,’ experts say

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A Canadian study suggests an association between household use of gas stoves and a higher risk of asthma in some kids. However, like other recent studies on the issue, the results were inconsistent.

Researchers acknowledged the findings suggest some health effects with gas stove use, but no direct connection to childhood asthma could be drawn.

That echoes similar findings elsewhere, but a study published last year in the United States associating gas stoves with childhood asthma added to the confusion.

WHAT WE CAN GLEAN FROM THE MOST RECENT DATA

The Canadian study, published June 9 in the Canadian Journal of Public Health, was based on questionnaires conducted by the CHILD Cohort Study to collect data on nearly 3,000 children born between 2009 and 2012 in Vancouver, Edmonton, Winnipeg and Toronto. The overall data in the project allows scientists to track the participants’ environment and health, including onset of asthma, obesity, diabetes and other chronic diseases over many years.

Dr. Padmaja Subbarao, a respirologist and study co-author, said 5.5 per cent of children living in a Toronto home with an electric stove were diagnosed with asthma but that jumped to just over 10 per cent at age five for kids whose families used a gas stove.

She said asthma cases were likely higher in Toronto compared with Vancouver, where they were not statistically significant, because a milder climate in the West Coast city means people tend to open their windows, even in winter. That allows pollutants such as carbon monoxide and nitrogen oxides emitted by gas stoves to escape outdoors instead of staying inside and potentially irritating the lungs.

“It shows you that it’s not as simple as saying you can’t have a gas stove,” Subbarao said. “It really depends on how you use it and the environmental characteristics that you live in.”

Gas stoves have become a hot topic after several studiesconnected their use to childhood asthma.

A meta analysis of various studies published last December in the International Journal of Environmental Research and Public Health suggested 12.7 per cent of childhood asthma cases in the United States are associated with gas stoves. Researchers said that is as toxic as second-hand smoke.

But multiple factors could contribute to asthma cases, including whether a kitchen lacks a range hood above the gas stove to vent pollution.

Children participating in the Canadian research were assessed for asthma when they were three years old and again at age five.

The researchers are trying to determine whether genetic factors make some children more vulnerable to asthma through exposure to pollutants produced by gas stoves.

“We’re looking for gene-environment interaction so we can actually answer those important questions,” Subbarao said.

Dr. Theo Moraes, another study co-author and head of the division of respiratory medicine at SickKids Hospital in Toronto, said that among the entire cohort of children, a statistical difference in asthma is only seen at age three, not age five, for those living with gas stoves versus electric stoves.

SHOULD YOU DITCH YOUR GAS STOVE?

Michael Brauer, a CHILD investigator and professor at the University of British Columbia’s School of Population and Public Health, co-wrote a commentary in the Lancet in 1996 about gas stoves and respiratory health. But he said that despite much more research into that topicsince then, the overall evidence showing a definitive link remains “murky.”

Brauer said much of the buzz around gas stoves may be linked to their association with climate change and that may be a better reason to stop using the appliances, which are connected to a supply system that leaks tiny amounts of the greenhouse gas methane.

“If you have the resources, there are several reasons to get rid of a gas stove,” said Brauer, who was not involved in the research.

HOW COULD ANY NEGATIVE EFFECTS OF A GAS STOVE BE PREVENTED?

“Everybody needs to pay more attention to ventilation,” said Jeff Brook, who leads CHILD’s physical environment component and is an associate professor at the University of Toronto’s Dalla Lana School of Public Health.

Hood fans that ventilate fumes to the outside could be considered the most important appliance in a kitchen but often get “short shrift,” said Brook, adding cheaper versions can be noisy so people tend not to use them.

Older gas stoves with a pilot light that stays on are a constant source of nitrogen oxides, even when they’re off, but opening a window whenever possible is a good option in the absence of proper ventilation in the kitchen, said Brook, a co-author of the paper.

WHAT ARE THE ALTERNATIVES?

Pressure cookers, microwaves and electric stoves, including induction stoves, which cook food quickly, are options to gas stoves.

Dr. Melissa Lem, a Vancouver family physician and president of the Canadian Association of Physicians for the Environment, said that from her perspective as a parent, choosing an induction stove would be a better, more energy-efficient way to cook without the burning of fossil fuels.

Lem said some people are putting a portable induction cooktop on a cutting board they place on top of their gas stove as a more affordable way to stop cooking with gas.

 

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Canada to donate up to 200,000 vaccine doses to combat mpox outbreaks in Africa

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The Canadian government says it will donate up to 200,000 vaccine doses to fight the mpox outbreak in Congo and other African countries.

It says the donated doses of Imvamune will come from Canada’s existing supply and will not affect the country’s preparedness for mpox cases in this country.

Minister of Health Mark Holland says the donation “will help to protect those in the most affected regions of Africa and will help prevent further spread of the virus.”

Dr. Madhukar Pai, Canada research chair in epidemiology and global health, says although the donation is welcome, it is a very small portion of the estimated 10 million vaccine doses needed to control the outbreak.

Vaccine donations from wealthier countries have only recently started arriving in Africa, almost a month after the World Health Organization declared the mpox outbreak a public health emergency of international concern.

A few days after the declaration in August, Global Affairs Canada announced a contribution of $1 million for mpox surveillance, diagnostic tools, research and community awareness in Africa.

On Thursday, the Africa Centres for Disease Control and Prevention said mpox is still on the rise and that testing rates are “insufficient” across the continent.

Jason Kindrachuk, Canada research chair in emerging viruses at the University of Manitoba, said donating vaccines, in addition to supporting surveillance and diagnostic tests, is “massively important.”

But Kindrachuk, who has worked on the ground in Congo during the epidemic, also said that the international response to the mpox outbreak is “better late than never (but) better never late.”

“It would have been fantastic for us globally to not be in this position by having provided doses a much, much longer time prior than when we are,” he said, noting that the outbreak of clade I mpox in Congo started in early 2023.

Clade II mpox, endemic in regions of West Africa, came to the world’s attention even earlier — in 2022 — as that strain of virus spread to other countries, including Canada.

Two doses are recommended for mpox vaccination, so the donation may only benefit 100,000 people, Pai said.

Pai questioned whether Canada is contributing enough, as the federal government hasn’t said what percentage of its mpox vaccine stockpile it is donating.

“Small donations are simply not going to help end this crisis. We need to show greater solidarity and support,” he said in an email.

“That is the biggest lesson from the COVID-19 pandemic — our collective safety is tied with that of other nations.”

This report by The Canadian Press was first published Sept. 13, 2024.

Canadian Press health coverage receives support through a partnership with the Canadian Medical Association. CP is solely responsible for this content.

The Canadian Press. All rights reserved.

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How many Nova Scotians are on the doctor wait-list? Number hit 160,000 in June

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HALIFAX – The Nova Scotia government says it could be months before it reveals how many people are on the wait-list for a family doctor.

The head of the province’s health authority told reporters Wednesday that the government won’t release updated data until the 160,000 people who were on the wait-list in June are contacted to verify whether they still need primary care.

Karen Oldfield said Nova Scotia Health is working on validating the primary care wait-list data before posting new numbers, and that work may take a matter of months. The most recent public wait-list figures are from June 1, when 160,234 people, or about 16 per cent of the population, were on it.

“It’s going to take time to make 160,000 calls,” Oldfield said. “We are not talking weeks, we are talking months.”

The interim CEO and president of Nova Scotia Health said people on the list are being asked where they live, whether they still need a family doctor, and to give an update on their health.

A spokesperson with the province’s Health Department says the government and its health authority are “working hard” to turn the wait-list registry into a useful tool, adding that the data will be shared once it is validated.

Nova Scotia’s NDP are calling on Premier Tim Houston to immediately release statistics on how many people are looking for a family doctor. On Tuesday, the NDP introduced a bill that would require the health minister to make the number public every month.

“It is unacceptable for the list to be more than three months out of date,” NDP Leader Claudia Chender said Tuesday.

Chender said releasing this data regularly is vital so Nova Scotians can track the government’s progress on its main 2021 campaign promise: fixing health care.

The number of people in need of a family doctor has more than doubled between the 2021 summer election campaign and June 2024. Since September 2021 about 300 doctors have been added to the provincial health system, the Health Department said.

“We’ll know if Tim Houston is keeping his 2021 election promise to fix health care when Nova Scotians are attached to primary care,” Chender said.

This report by The Canadian Press was first published Sept. 11, 2024.

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Newfoundland and Labrador monitoring rise in whooping cough cases: medical officer

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ST. JOHN’S, N.L. – Newfoundland and Labrador‘s chief medical officer is monitoring the rise of whooping cough infections across the province as cases of the highly contagious disease continue to grow across Canada.

Dr. Janice Fitzgerald says that so far this year, the province has recorded 230 confirmed cases of the vaccine-preventable respiratory tract infection, also known as pertussis.

Late last month, Quebec reported more than 11,000 cases during the same time period, while Ontario counted 470 cases, well above the five-year average of 98. In Quebec, the majority of patients are between the ages of 10 and 14.

Meanwhile, New Brunswick has declared a whooping cough outbreak across the province. A total of 141 cases were reported by last month, exceeding the five-year average of 34.

The disease can lead to severe complications among vulnerable populations including infants, who are at the highest risk of suffering from complications like pneumonia and seizures. Symptoms may start with a runny nose, mild fever and cough, then progress to severe coughing accompanied by a distinctive “whooping” sound during inhalation.

“The public, especially pregnant people and those in close contact with infants, are encouraged to be aware of symptoms related to pertussis and to ensure vaccinations are up to date,” Newfoundland and Labrador’s Health Department said in a statement.

Whooping cough can be treated with antibiotics, but vaccination is the most effective way to control the spread of the disease. As a result, the province has expanded immunization efforts this school year. While booster doses are already offered in Grade 9, the vaccine is now being offered to Grade 8 students as well.

Public health officials say whooping cough is a cyclical disease that increases every two to five or six years.

Meanwhile, New Brunswick’s acting chief medical officer of health expects the current case count to get worse before tapering off.

A rise in whooping cough cases has also been reported in the United States and elsewhere. The Pan American Health Organization issued an alert in July encouraging countries to ramp up their surveillance and vaccination coverage.

This report by The Canadian Press was first published Sept. 10, 2024.

The Canadian Press. All rights reserved.

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