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Why you need to eat fewer ultra-processed foods like frozen pizza and even granola bars – The Globe and Mail

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A customer pushes a shopping cart through the frozen food aisle inside a Kroger Co. grocery store in Louisville, Kentucky, U.S., on June 14, 2017.

Luke Sharrett/bloomberg

Grocery stores are flooded with foods produced by extensive industrial processing. Examples: granola and protein bars, margarine, frozen pizza, chicken nuggets, breakfast cereals, pretzels, instant noodles, muffin and cake mixes, mass-produced packaged breads and soft drinks.

A steady intake of ultra-processed foods has been linked to an increased risk of chronic health problems such as obesity, heart disease, Type 2 diabetes and fatty liver disease.

Now, findings from a large Italian study add to mounting evidence that ultra-processed foods should be limited. Added sugars in these foods, as well as the processing methods used to make them, may contribute to their harmful effects.

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What are ultra-processed foods (UPFs)?

According to the Heart and Stroke Foundation of Canada, nearly 50 per cent of the calories in our diet come from UPFs, and Canadian kids, ages 9 to 13, consume even more.

UPFs are formulations of substances derived from foods plus numerous additives used to flavour, bleach, colour, emulsify, texturize and preserve. They contain little, if any, real food at all.

These foods are typically high in calories, unhealthy fats, added sugars and sodium and are lacking fibre and protective phytochemicals.

The altered taste and texture of UPFs make them highly palatable and habit-forming.

The new findings

The latest study, published online in the American Journal of Clinical Nutrition, analyzed the eating habits and health outcomes of 22,475 citizens of Italy, with an average age of 55 years, over eight years.

Participants who consumed the highest amount of UPFs (14 per cent of total food intake versus 6.6 per cent) had a 26-per-cent increased risk of dying from any cause, and a 58-per-cent greater risk of dying from cardiovascular disease. The greater the intake of UPFs, the greater the risk of death.

The researchers accounted for other risk factors including age, sex, smoking status, physical activity, body mass index, health history, calorie intake and diet quality.

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Processed meats, pizza, cakes and pies were the largest contributors to ultra-processed food intake.

Limitations of the study include its observational design (it can’t provide that eating UPFs causes premature death) and the use of self-reported questionnaires (which are subject to error) to collect dietary data.

Still, the researchers collected detailed information on lifestyle and health factors to help rule out other possible reasons for the findings. It was also the first study to look at nutrients that may link UPFs to death.

Added sugars explained nearly 40 per cent of the association between UPFs and cardiovascular death. This is in keeping with the theory, and findings from a recent randomized controlled trial, that UPFs promote excessive calorie intake and weight gain.

How UPFs may cause harm

Besides added sugars, other components of UPFs may cause unfavourable health effects. Components introduced during processing may promote inflammation by altering the composition of our gut bacteria.

Ultra-processing strips foods of beneficial nutrients and phytochemicals. It also changes the structure of foods in a way that spikes blood sugar and insulin and also makes them less satiating, which can promote overconsumption.

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Heating and processing can also lead to the formation of compounds that may have harmful effects, especially with respect to cardiovascular disease.

Tips to eat fewer UPFs

Make a list of the UPFs you eat on a regular basis and put strategies in place to buy them less often.

Make a meal plan for the week to avoid reaching for highly processed prepared foods when pressed for time. Keep staples on hand that you can quickly turn into a healthy meal (e.g., canned fish and beans, canned tomatoes, frozen edamame, frozen vegetables).

Make homemade versions of the UPFs you rely on such as granola and energy bars, pasta sauce, soups, salad dressings and muffins. Roast a turkey breast for sandwiches and salads.

Replace highly processed snacks with whole and minimally processed ones. Kale chips, popcorn, unsweetened dried fruit and nuts and plain yogurt and berries are examples.

Read ingredient lists when buying packaged foods. As often as possible, choose ones with ingredients you’d find in your own pantry.

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Leslie Beck, a Toronto-based private practice dietitian, is director of food and nutrition at Medcan. Follow her on Twitter @LeslieBeckRD

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Whooping cough is at a decade-high level in US

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MILWAUKEE (AP) — Whooping cough is at its highest level in a decade for this time of year, U.S. health officials reported Thursday.

There have been 18,506 cases of whooping cough reported so far, the Centers for Disease Control and Prevention said. That’s the most at this point in the year since 2014, when cases topped 21,800.

The increase is not unexpected — whooping cough peaks every three to five years, health experts said. And the numbers indicate a return to levels before the coronavirus pandemic, when whooping cough and other contagious illnesses plummeted.

Still, the tally has some state health officials concerned, including those in Wisconsin, where there have been about 1,000 cases so far this year, compared to a total of 51 last year.

Nationwide, CDC has reported that kindergarten vaccination rates dipped last year and vaccine exemptions are at an all-time high. Thursday, it released state figures, showing that about 86% of kindergartners in Wisconsin got the whooping cough vaccine, compared to more than 92% nationally.

Whooping cough, also called pertussis, usually starts out like a cold, with a runny nose and other common symptoms, before turning into a prolonged cough. It is treated with antibiotics. Whooping cough used to be very common until a vaccine was introduced in the 1950s, which is now part of routine childhood vaccinations. It is in a shot along with tetanus and diphtheria vaccines. The combo shot is recommended for adults every 10 years.

“They used to call it the 100-day cough because it literally lasts for 100 days,” said Joyce Knestrick, a family nurse practitioner in Wheeling, West Virginia.

Whooping cough is usually seen mostly in infants and young children, who can develop serious complications. That’s why the vaccine is recommended during pregnancy, to pass along protection to the newborn, and for those who spend a lot of time with infants.

But public health workers say outbreaks this year are hitting older kids and teens. In Pennsylvania, most outbreaks have been in middle school, high school and college settings, an official said. Nearly all the cases in Douglas County, Nebraska, are schoolkids and teens, said Justin Frederick, deputy director of the health department.

That includes his own teenage daughter.

“It’s a horrible disease. She still wakes up — after being treated with her antibiotics — in a panic because she’s coughing so much she can’t breathe,” he said.

It’s important to get tested and treated with antibiotics early, said Dr. Kris Bryant, who specializes in pediatric infectious diseases at Norton Children’s in Louisville, Kentucky. People exposed to the bacteria can also take antibiotics to stop the spread.

“Pertussis is worth preventing,” Bryant said. “The good news is that we have safe and effective vaccines.”

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AP data journalist Kasturi Pananjady contributed to this report.

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The Associated Press Health and Science Department receives support from the Robert Wood Johnson Foundation. The AP is solely responsible for all content.

The Canadian Press. All rights reserved.

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Scientists show how sperm and egg come together like a key in a lock

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How a sperm and egg fuse together has long been a mystery.

New research by scientists in Austria provides tantalizing clues, showing fertilization works like a lock and key across the animal kingdom, from fish to people.

“We discovered this mechanism that’s really fundamental across all vertebrates as far as we can tell,” said co-author Andrea Pauli at the Research Institute of Molecular Pathology in Vienna.

The team found that three proteins on the sperm join to form a sort of key that unlocks the egg, allowing the sperm to attach. Their findings, drawn from studies in zebrafish, mice, and human cells, show how this process has persisted over millions of years of evolution. Results were published Thursday in the journal Cell.

Scientists had previously known about two proteins, one on the surface of the sperm and another on the egg’s membrane. Working with international collaborators, Pauli’s lab used Google DeepMind’s artificial intelligence tool AlphaFold — whose developers were awarded a Nobel Prize earlier this month — to help them identify a new protein that allows the first molecular connection between sperm and egg. They also demonstrated how it functions in living things.

It wasn’t previously known how the proteins “worked together as a team in order to allow sperm and egg to recognize each other,” Pauli said.

Scientists still don’t know how the sperm actually gets inside the egg after it attaches and hope to delve into that next.

Eventually, Pauli said, such work could help other scientists understand infertility better or develop new birth control methods.

The work provides targets for the development of male contraceptives in particular, said David Greenstein, a genetics and cell biology expert at the University of Minnesota who was not involved in the study.

The latest study “also underscores the importance of this year’s Nobel Prize in chemistry,” he said in an email.

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The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Science and Educational Media Group. The AP is solely responsible for all content.

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Older patients, non-English speakers more likely to be harmed in hospital: report

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Patients who are older, don’t speak English, and don’t have a high school education are more likely to experience harm during a hospital stay in Canada, according to new research.

The Canadian Institute for Health Information measured preventableharmful events from 2023 to 2024, such as bed sores and medication errors,experienced by patients who received acute care in hospital.

The research published Thursday shows patients who don’t speak English or French are 30 per cent more likely to experience harm. Patients without a high school education are 20 per cent more likely to endure harm compared to those with higher education levels.

The report also found that patients 85 and older are five times more likely to experience harm during a hospital stay compared to those under 20.

“The goal of this report is to get folks thinking about equity as being a key dimension of the patient safety effort within a hospital,” says Dana Riley, an author of the report and a program lead on CIHI’s population health team.

When a health-care provider and a patient don’t speak the same language, that can result in the administration of a wrong test or procedure, research shows. Similarly, Riley says a lower level of education is associated with a lower level of health literacy, which can result in increased vulnerability to communication errors.

“It’s fairly costly to the patient and it’s costly to the system,” says Riley, noting the average hospital stay for a patient who experiences harm is four times more expensive than the cost of a hospital stay without a harmful event – $42,558 compared to $9,072.

“I think there are a variety of different reasons why we might start to think about patient safety, think about equity, as key interconnected dimensions of health-care quality,” says Riley.

The analysis doesn’t include data on racialized patients because Riley says pan-Canadian data was not available for their research. Data from Quebec and some mental health patients was also excluded due to differences in data collection.

Efforts to reduce patient injuries at one Ontario hospital network appears to have resulted in less harm. Patient falls at Mackenzie Health causing injury are down 40 per cent, pressure injuries have decreased 51 per cent, and central line-associated bloodstream infections, such as IV therapy, have been reduced 34 per cent.

The hospital created a “zero harm” plan in 2019 to reduce errors after a hospital survey revealed low safety scores. They integrated principles used in aviation and nuclear industries, which prioritize safety in complex high-risk environments.

“The premise is first driven by a cultural shift where people feel comfortable actually calling out these events,” says Mackenzie Health President and Chief Executive Officer Altaf Stationwala.

They introduced harm reduction training and daily meetings to discuss risks in the hospital. Mackenzie partnered with virtual interpreters that speak 240 languages and understand medical jargon. Geriatric care nurses serve the nearly 70 per cent of patients over the age of 75, and staff are encouraged to communicate as frequently as possible, and in plain language, says Stationwala.

“What we do in health care is we take control away from patients and families, and what we know is we need to empower patients and families and that ultimately results in better health care.”

This report by The Canadian Press was first published Oct. 17, 2024.

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

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