How much daily exercise makes an impact? – CTV News
When you can’t fit your entire workout into a busy day, do you think there’s no point in doing anything at all? You should rethink that mindset. Just 11 minutes of moderate-to-vigorous intensity aerobic activity per day could lower your risk of cancer, cardiovascular disease or premature death, a large new study has found.
Aerobic activities include walking, dancing, running, jogging, cycling and swimming. You can gauge the intensity level of an activity by your heart rate and how hard you’re breathing as you move. Generally, being able to talk but not sing during an activity would make it moderate intensity. Vigorous intensity is marked by the inability to carry on a conversation.
Higher levels of physical activity have been associated with lower rates of premature death and chronic disease, according to past research. But how the risk levels for these outcomes are affected by the amount of exercise someone gets has been more difficult to determine. To explore this impact, scientists largely from the University of Cambridge in the United Kingdom looked at data from 196 studies, amounting to more than 30 million adult participants who were followed for 10 years on average. The results of this latest study were published Tuesday in the British Journal of Sports Medicine.
The study mainly focused on participants who had done the minimum recommended amount of 150 minutes of exercise per week, or 22 minutes per day. Compared with inactive participants, adults who had done 150 minutes of moderate-to-vigorous aerobic physical activity per week had a 31% lower risk of dying from any cause, a 29% lower risk of dying from cardiovascular disease and a 15% lower risk of dying from cancer.
The same amount of exercise was linked with a 27% lower risk of developing cardiovascular disease and 12% lower risk when it came to cancer.
“This is a compelling systematic review of existing research,” said CNN Medical Analyst Dr. Leana Wen, an emergency physician and public health professor at George Washington University, who wasn’t involved in the research. “We already knew that there was a strong correlation between increased physical activity and reduced risk for cardiovascular disease, cancer and premature death. This research confirms it, and furthermore states that a smaller amount than the 150 minutes of recommended exercise a week can help.”
Even people who got just half the minimum recommended amount of physical activity benefited. Accumulating 75 minutes of moderate-intensity activity per week — about 11 minutes of activity per day — was associated with a 23% lower risk of early death. Getting active for 75 minutes on a weekly basis was also enough to reduce the risk of developing cardiovascular disease by 17% and cancer by 7%.
Beyond 150 minutes per week, any additional benefits were smaller.
“If you are someone who finds the idea of 150 minutes of moderate-intensity physical activity a week a bit daunting, then our findings should be good news,” said study author Dr. Soren Brage, group leader of the Physical Activity Epidemiology group in the Medical Research Council Epidemiology Unit at the University of Cambridge, in a news release. “This is also a good starting position — if you find that 75 minutes a week is manageable, then you could try stepping it up gradually to the full recommended amount.”
The authors’ findings affirm the World Health Organization’s position that doing some physical activity is better than doing none, even if you don’t get the recommended amounts of exercise.
“One in 10 premature deaths could have been prevented if everyone achieved even half the recommended level of physical activity,” the authors wrote in the study. Additionally, “10.9% and 5.2% of all incident cases of CVD (cardiovascular disease) and cancer would have been prevented.”
Important note: If you experience pain while exercising, stop immediately. Check with your doctor before beginning any new exercise program.
A LITTLE EXERCISE EVERY DAY
The authors didn’t have details on the specific types of physical activity the participants did. But some experts do have thoughts on how physical activity could reduce risk for chronic diseases and premature death.
“There are many potential mechanisms including the improvement and maintenance of body composition, insulin resistance and physical function because of a wide variety of favorable influences of aerobic activity,” said Haruki Momma, an associate professor of medicine and science in sports and exercise at Tohoku University in Japan. Momma wasn’t involved in the research.
Benefits could also include improvement to immune function, lung and heart health, inflammation levels, hypertension, cholesterol, and amount of body fat, said Eleanor Watts, a postdoctoral fellow in the division of cancer epidemiology and genetics at the National Cancer Institute. Watts wasn’t involved in the research.
“These translate into lower risk of getting chronic diseases,” said Peter Katzmarzyk, associate executive director for population and public health sciences at Pennington Biomedical Research Center in Baton Rouge, Louisiana. Katzmarzyk wasn’t involved in the research.
The fact that participants who did only half the minimum recommended amount of exercise still experienced benefits doesn’t mean people shouldn’t aim for more exercise, but rather that “perfect shouldn’t be the enemy of the good,” Wen said. “Some is better than none.”
To get up to 150 minutes of physical activity per week, find activities you enjoy, Wen said. “You are far more likely to engage in something you love doing than something you have to make yourself do.”
And when it comes to how you fit in your exercise, you can think outside the box.
“Moderate activity doesn’t have to involve what we normally think of (as) exercise, such as sports or running,” said study coauthor Leandro Garcia, a lecturer in the school of medicine, dentistry and biomedical sciences at Queen’s University Belfast, in a news release. “Sometimes, replacing some habits is all that is needed.
“For example, try to walk or cycle to your work or study place instead of using a car, or engage in active play with your kids or grand kids. Doing activities that you enjoy and that are easy to include in your weekly routine is an excellent way to become more active.”
COVID-19 hair loss: Experts weigh in on PRP therapy – CTV News
The list of ways a COVID-19 infection disrupts the body’s natural functions is long and diverse, and, as Viktorya Skrypnyk’s clients have come to learn, includes hair loss.
Skrypnyk is a registered nurse who owns and operates VBeauty Spa, a medical aesthetic clinic in Toronto. The last two years have sent a parade of people through the doors of her clinic struggling with hair loss they say began after a COVID-19 infection.
“Lately, I do see that there’s people that are coming in that have no history of hair loss in the family, no history of alopecia that are developing these symptoms of alopecia within last few years,” she told CTVNews.ca on Friday. “Most of them are saying that they generally noticed an increase in the year loss specifically after acquiring COVID.”
Multiple published studies have shown COVID infections can trigger a type of hair shedding called telogen effluvium (TE). With TE, thinning typically occurs around the top of the head.
When clients suffering from TE come to Skrypnyk, it’s usually for a treatment she offers known as platelet-rich plasma (PRP) therapy. Before the pandemic, Skrypnyk estimates 70 per cent of her PRP therapy clients were men. Now?
“Lately I’ve noticed, after COVID especially, it’s been more popular among women,” she said.
WHAT IS PRP THERAPY?
Platelet-rich plasma therapy is a form of regenerative medicine that uses a patient’s own blood cells – specifically platelets – to accelerate healing in a specific area of the body.
Plasma is the liquid portion of blood; the medium that carries red and white blood cells and platelets through the body. It’s made mostly of water and proteins. Platelets are blood cells that aid in blood clotting and contain a naturally-occurring substance called growth factor, which stimulates cell growth and wound healing.
In PRP therapy, a patient’s blood is collected and spun in a centrifuge to concentrate the platelet component of the blood. The patient’s own platelet-rich plasma is then injected into an area of the body that needs help with growth or healing, like an injured muscle or, in some cases, a scalp losing hair.
“We usually withdraw the platelets and re-inject them back into the hairline, specifically where there’s a lot of hair loss,” Skrypnyk said.
PRP meets the definition of a drug under Canada’s Food and Drugs Act, but isn’t covered by provincial health insurance plans. At VBeauty Spa, a treatment typically costs $600, though other clinics may charge more or less.
According to an entry by doctors Neera Nathan and Maryanne Makredes Senna in the Harvard Health Blog, most of the research on PRP for hair loss has looked at its use to treat androgenetic alopecia, also known as hormone-related baldness. Androgenetic alopecia affects both men and women, resulting in balding at the crown and front of the head in men, and balding that begins with a widening of the part in women.
“There is not enough evidence to make conclusions about the effectiveness of PRP for other types of hair loss, like telogen effluvium, alopecia areata or forms of scarring hair loss,” Nathan and Senna wrote.
YOUR MILEAGE MAY VARY
A person can elect to receive PRP therapy for any type of hair loss, but Dr. Jeff Donovan cautions it should only be considered as a second- or third-line treatment for most patients and most types of hair loss.
“PRP is very popular, but the overwhelming message that I would have is that there is no hair loss condition for which PRP is the first-line option,” Donovan told CTVNews.ca in a phone interview on Friday.
Donovan is a dermatologist and member of the Canadian Dermatology Association who specializes in hair loss. Like Skrypnyk, he sometimes treats patients using PRP therapy. However, he rarely uses it to treat the type of hair loss most commonly linked to COVID-19 infections – telogen effluvium – and he never prescribes it as a first-line treatment.
For one thing, he explained, TE normally resolves on its own after four to eight months, as long as the condition that triggered it has resolved. It often doesn’t respond to the typical hair loss treatments.
“Telogen effluvium is a hair loss condition that happens due to a trigger,” Donovan told CTVNews.ca on Friday. “The treatment for telogen effluvium involves treating the trigger, not a bandaid with some other treatment plan.”
If a patient’s TE was triggered by low iron, treatment would involve restoring their iron levels, he said. Likewise, TE triggered by a thyroid condition, or a condition like anorexia nervosa, should resolve after the underlying condition has been treated.
In rare cases, Donovan will recommend PRP therapy for a patient suffering from TE for which an underlying cause can’t be pinpointed. More often, he’ll recommend it for patients suffering from other types of hair loss, but even then, only after exhausting other treatment options.
“When we speak about treatment for hair loss, we must speak about what is the first line treatment, what is the second line treatment and what is the third line treatment,” he said. “These are treatment ladders according to evidence-based medicine.”
For a client with alopecia areata, a type of hair loss that results in circular bald patches, Donovan said the first-line treatments are topical steroid injections and topical minoxidil, which is the active ingredient in Rogaine. For genetic hair loss or androgenetic hair loss, Donovan would first recommend oral and topical minoxidil as well as topical and oral anti-androgens.
Among clients who do end up using PRP therapy, Donovan said between 20 and 40 per cent will see mild benefits, such as a slower rate of hair loss or some modest growth. In order for PRP therapy to provide long-term benefits, however, Donovan said clients typically need to return for treatments three times per year, indefinitely.
Like Skrypnyk, Donovan has noticed more people seeking out PRP therapy for TE in the past year or two. However, he cautions against shelling out for the treatment before speaking to a doctor.
“Due to the popular nature of PRP and the marketing that goes into PRP, there has been an increase in the number of patients demanding that therapy,” he said. “However, that is not necessarily reflective of the benefit of the treatment. Nor is it reflective of how these conditions should be managed based on current scientific evidence.”
Instead, Dovovan said anyone who has hair loss concerns should start by seeking a diagnosis from their usual health-care provider, who can screen for underlying triggers and suggest treatments.
“In my practice, I really prefer when patients come after having tried several therapies,” he said, “because then I get a sense of how well the hair is responding to certain types of treatments.”
'Worrisome' deadly fungus spreading through US at alarming rate – Sky News
A drug-resistant and potentially deadly fungus is spreading rapidly through US health facilities, according to a government study.
Researchers from the Centres for Disease Control and Prevention (CDC) reported the fungus, a type of yeast called Candida auris or C. auris, can cause severe illness in people with weakened immune systems.
The number of people diagnosed, as well as the number who were found through screening to be carrying C. auris, has been rising at an alarming rate since the fungus was first reported in the US in 2016.
The fungus was identified in 2009 in Asia, but scientists have said C. auris first appeared around the world about a decade earlier.
Dr Meghan Lyman, chief medical officer of the CDC’s mycotic diseases branch, said the increases, “especially in the most recent years, are really concerning to us”.
“We’ve seen increases not just in areas of ongoing transmission, but also in new areas,” she said.
Dr Lyman also said she was concerned about the increasing number of fungus samples resistant to the common treatments for it.
Dr Waleed Javaid, an epidemiologist and director of infection prevention and control at Mount Sinai Downtown in New York, said the fungus was “worrisome”.
“But we don’t want people who watched ‘The Last Of Us’ to think we’re all going to die,” Dr Javaid said.
“This is an infection that occurs in extremely ill individuals who are usually sick with a lot of other issues.”
Is The Last Of Us’ real ‘zombie’ fungus an actual threat?
The fungus, which can be found on the skin and throughout the body, is not a threat to healthy people.
But about one-third of people who become sick with C. auris die.
The fungus has been detected in more than half of all US states. The number of infections in the US increased by 95% between 2020 and 2021.
Species of fungus discovered in Scotland
Fungal infections ‘increased significantly’ during COVID pandemic
The new research comes as Mississippi is facing a growing outbreak of the fungus.
Since November, 12 people in the state have been infected with four “potentially associated deaths”, according to the state’s health department.
More dead birds found in Caledon could be linked to bird flu
Possible cases of bird flu have been found in Caledon as potential outbreaks of the virus are popping up in Brampton and across southern Ontario.
The City of Brampton issued a warning about two possible avian flu incidents on Friday after dead birds were found in the area of Professor’s Lake and Duncan Foster Valley South.
Now the Town of Caledon says a number of dead birds have also been found in a pond near Coleraine Dr. and Harvest Moon Dr. and that the deaths may be related to bird flu.
The Town has closed a trail in the area out of precaution and says testing is being conducted by the Canadian Wildlife Health Cooperative to determine the birds’ cause of death.
Peel Public Health says that while avian influenza is a threat to birds, the risk to humans is very low.
“Most cases of human avian flu have been traced to handling infected poultry or their droppings,” said Dr. Nicholas Brandon, acting Medical Officer of Health for PPH. “Residents are asked to follow the recommended guidance to limit the spread of avian flu and protect the health and safety of residents and pets.”
Peel Public Health is recommending residents and pet owners are asked to take the following precautions:
- Keep animals away from any waterfowl or fecal matter
- Do not feed or otherwise interact with the waterfowl
- Keep cats indoors
- Keep dogs on a leash (as required under the municipal by-law)
- Do not feed pets (e.g., dogs or cats) any raw meat from game birds or poultry
- Pet birds, if not normally kept indoors, should be restricted to the indoors
- Bird feeders should be removed or washed with soap and water frequently to reduce the chance of bacterial or viral contamination
The cause of the birds’ death in all three of the cases in Peel has not been confirmed but Brampton Animal Services is actively monitoring the areas.
If the birds test negative for Avian Influenza a full necropsy will be conducted to determine the cause of death, the City of Brampton said on Friday.
Last week the Toronto Zoo shut down some of its bird enclosures after an avian flu case was detected at a southern Ontario poultry farm.
A highly pathogenic type of H5N1 avian flu has been tearing through Canadian flocks since early 2022, killing millions of birds and infecting a record number of avian species.
The Canadian Food Inspection Agency detected a case at a commercial poultry operation southeast of Hamilton on Tuesday, the second reported Ontario site in a week after a lull in detected cases going back to the end of December.
With files from The Canadian Press
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