Health
Kids who wear school uniforms get less physical activity, study finds: 'There's a problem'
School uniforms can make parents’ lives easier. But can they negatively impact kids’ health?
A study published in the Journal of Sport and Health Science suggests that school uniform policies could serve as a barrier to children getting daily physical activity.
Researchers from the University of Cambridge in the U.K. analyzed the physical activity data from more than one million young people between 5 and 17 years old in 135 countries via an online survey.
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They found that in countries where school uniforms are more prevalent, fewer kids get an average of 60 minutes of daily physical activity, according to a press release from the university.
The World Health Organization (WHO) recommends an average of 60 minutes of at least moderate-intensity activity per day for youth between 5 and 17 years old.
A study from the University of Cambridge in the U.K. suggests that school uniform policies could prevent daily physical activity for kids. (iStock)
In countries where a majority of schools required uniforms, 16% of students met that threshold, the study found.
In countries where uniforms were not as prevalent, 19.5% of students got the recommended amount of activity.
“Social norms and expectations tend to influence what they feel they can do in these clothes.”
Female students were found to get less exercise than males, the study found.
“Girls might feel less confident about doing things like cartwheels and tumbles in the playground, or riding a bike on a windy day, if they are wearing a skirt or dress,” said senior author Dr. Esther van Sluijs, MRC investigator, in the release.
“Social norms and expectations tend to influence what they feel they can do in these clothes. Unfortunately, when it comes to promoting physical health, that’s a problem.”
In countries where school uniforms are more prevalent, fewer kids get an average of 60 minutes of daily physical activity, a new study has found. (iStock)
While the study established an association, the researchers noted that “causation cannot be inferred” between the uniforms and the reduced activity.
Smaller studies in the past have suggested this effect.
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Based on the findings, the researchers are calling for further research into a possible link between uniforms and more sedentary behavior.
“We now need more information to build on these findings, considering factors like how long students wear their uniforms for after school, whether this varies depending on their background, and how broader gendered clothing norms may impact their activity,” said Dr. Mairead Ryan, a researcher at the Faculty of Education and Medical Research Council (MRC) Epidemiology Unit at the University of Cambridge, in the release.
Based on the findings, the researchers are calling for further research into a possible link between uniforms and more sedentary behavior. (iStock)
The goal is not to ban uniforms altogether, she said.
“School communities could consider design, and whether specific characteristics of a uniform might either encourage or restrict any opportunities for physical activity across the day,” suggested Ryan.
“Working together for the betterment of children both physically and academically is the goal, at both home and school.”
Fox News Digital reached out to the Cambridge researchers requesting additional comment.
Dr. Nadia Teymoorian, a family therapist from the Moment of Clarity Health Center in California, was not involved in the study but offered her reaction.
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School uniforms can offer some benefits for families, she noted — primarily a decrease in social bullying, reduced costs for parents and less peer pressure.
“What was not a focus [of the research] was the dynamics of the region of the study,” she told Fox News Digital.
“I have witnessed over the years that in areas where it is warmer [California or Florida], children participate in a number of physical activities. The limitations on physical participation could have much to do with weather, finances and activities provided by the school districts themselves.”
The World Health Organization recommends that kids get an average of 60 minutes of at least moderate-intensity activity per day. (iStock)
Many charter schools (independent, government-funded schools) may not have physical activity programs and may require the students’ families to incorporate activity, Teymoorian noted.
“Charter schools focus on academics more so than physical activity,” she said.
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The expert suggested that families should make an effort to participate in physical activities that are documented to support better health.
“I would like to see a study on the concept of incorporating school and home as a team effort on better health and wellness,” she said.
“Regular physical activity can help children and adolescents on many levels, including building strong bones and muscles, maintaining a healthy weight, and reducing the risk of many health conditions, such as heart disease and depression,” a doctor told Fox News Digital. (iStock)
“Working together for the betterment of children both physically and academically is the goal, both at home and at school.”
“Helping your child to find the right activity for their physical needs, personality and preferences at an early age is key to making exercise an enjoyable, lifelong habit.”
Dr. Marianna Nicoletta Gentile, a pediatric endocrinologist at K. Hovnanian Children’s Hospital at Jersey Shore University Medical Center, was also not involved in the research, but emphasized the importance of regular exercise for youth.
“Regular physical activity can help children and adolescents on many levels, including building strong bones and muscles, maintaining a healthy weight and reducing the risk of many health conditions, such as heart disease and depression,” she told Fox News Digital.
“Helping your child to find the right activity for their physical needs, personality and preferences at an early age is key to making exercise an enjoyable, lifelong habit,” Gentile added.
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Feeling lonely may take a toll on older adults’ memory — but it may not speed up cognitive decline, according to a new study.
Researchers from Colombia, Spain and Sweden analyzed data from more than 10,000 adults ages 65 to 94 across 12 European countries and found those who reported higher levels of loneliness did worse on memory tests at the start of the study, according to research published this month in the journal Aging & Mental Health.
Over a seven-year period, however, memory decline occurred at a similar rate regardless of how lonely participants felt.
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“The finding that loneliness significantly impacted memory, but not the speed of decline in memory over time was a surprising outcome,” lead author Dr. Luis Carlos Venegas-Sanabria of the School of Medicine and Health Sciences at the Universidad del Rosario said in a statement.
Loneliness may be linked to memory performance in older adults, a new study suggests. (iStock)
“It suggests that loneliness may play a more prominent role in the initial state of memory than in its progressive decline,” Venegas-Sanabria said, adding that the findings highlight the importance of addressing loneliness as a factor in cognitive performance.
The findings add to debate about whether loneliness contributes to dementia risk. While loneliness and social isolation are often considered risk factors for cognitive decline, research results have been mixed.
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The study looked at data from the long-running Survey of Health, Ageing and Retirement in Europe (SHARE), which tracked 10,217 older adults between 2012 and 2019. Participants were asked to recall words immediately and after a delay to measure memory performance.
Social isolation and loneliness could play a surprising role in cognitive health among seniors. (iStock)
Loneliness was assessed using three questions about how often participants felt isolated, left out or lacking companionship.
About 8% of participants reported high levels of loneliness at the outset. That group tended to be older, more likely to be female and more likely to have conditions such as depression.
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Researchers found that those with higher loneliness had lower scores on both immediate and delayed memory tests at baseline. Still, all groups — regardless of loneliness level — experienced similar declines in memory over time.
The results suggest loneliness may not directly accelerate the progression of memory loss, though it remains linked to poorer cognitive performance overall.
Researchers look at a brain scan at the National Institutes of Health in Bethesda, Maryland. (Saul Loeb/AFP/Getty Images)
Experts warn, however, that the findings should not be interpreted to mean loneliness is harmless.
“The finding that lonely older adults start with worse memory but don’t decline faster is actually the most interesting part of the paper, and I think it’s easy to misread,” said Jordan Weiss, Ph.D., a scientific advisor and aging expert at Assisted Living Magazine and a professor at NYU Grossman School of Medicine.
“It likely means loneliness does its damage earlier in life, well before people show up in a study like this at 65-plus,” Weiss told Fox News Digital.
By older age, long-term social patterns may already be established, making it harder to detect when the effects of loneliness first took hold, an aging expert says. (iStock)
He suggested that by older age, long-term social patterns may already be established, making it harder to detect when the effects of loneliness first took hold.
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“By the time you’re measuring someone in their late 60s, decades of social connection patterns are already baked in,” he said.
Weiss, who was not involved in the research, added that loneliness may coincide with other health conditions, and noted that participants who felt more isolated also had higher rates of depression, high-blood pressure and diabetes. The link, he said, may reflect a cluster of health risks rather than a direct cause.
“While they can go hand-in-hand, it’s not clear that loneliness contributes to dementia,” a psychotherapist says. (iStock)
Amy Morin, a Florida-based psychotherapist and author, said the findings reflect a broader pattern in research on loneliness and brain health, and that the relationship may be more complex than it appears.
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“The evidence shows there’s a link between loneliness and cognitive decline but there’s no direct evidence of a cause and effect relationship,” she said. “So while they can go hand-in-hand, it’s not clear that loneliness contributes to dementia.”
Morin added that loneliness, which can fluctuate, may not be the root of the problem, but rather a symptom of other underlying mental or physical health issues.
Researchers suggested screening for loneliness be incorporated into routine cognitive assessments as one way to support healthy aging. (iStock)
She said staying socially and mentally engaged is crucial for overall brain health.
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“It’s important to be proactive about social activities,” Morin said. “Joining a book club, having coffee with a friend, or attending faith-based services can be a powerful way to maintain connections in older age.”
The researchers also suggested screening for loneliness be incorporated into routine cognitive assessments as one way to support healthy aging.
Fox News Digital reached out to the researchers for comment.
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Research continues to uncover new details on how fasting may help extend life.
A new study published in the journal Nature Communications investigated how intermittent fasting can boost longevity in small worms often used in aging research.
Researchers from the University of Texas Southwestern Medical Center in Dallas compared worms that were fed normally to those that underwent a 24-hour fast in early adulthood and were then fed again, according to a press release.
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The scientists measured a variety of factors, including stored fat, gene activity related to fat metabolism and lifespan.
The results showed that the life-boosting benefit did not depend on the fasting itself but on the body’s behavior after eating again.
Experts say sustainability is key when choosing a long-term weight-loss strategy. (iStock)
Study lead Peter Douglas, associate professor of molecular biology and a member of the Hamon Center for Regenerative Science and Medicine at UT Southwestern, suggested that these discoveries “shift the focus toward a neglected side of the metabolic coin – the re-feeding phase.”
“Our data suggest that the health-promoting effects of intermittent fasting are not merely a product of the fast itself, but are dependent on how the metabolic machinery recalibrates during the subsequent transition back to a fed state,” he said.
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“Our findings bridge a gap between lipid metabolism and aging research,” he added. “By targeting aging, the single greatest risk factor for human disease, we move beyond treating isolated conditions toward a preventive model of medicine that enhances quality of life for all individuals.”
Lauri Wright, director of nutrition programs at the University of South Florida’s College of Public Health, called this a “high-quality” study that adds an “important nuance to how we think about fasting and longevity.”
Intermittent fasting typically involves limiting meals to an eight-hour daily window or fasting every other day. (iStock)
The benefits of the refeeding phase after fasting were “especially interesting,” Wright, who was not involved in the study, told Fox News Digital.
“The researchers showed that longevity was linked to the body’s ability to turn off fat breakdown after fasting, allowing cells to restore energy balance,” she reiterated.
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“From a scientific standpoint, that’s a meaningful shift because it suggests fasting is not just about burning fat, but about metabolic flexibility.”
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Fasting may support longevity through triggering metabolic switching, enhancing cellular repair and stress resistance and improving markers like insulin sensitivity, research shows.
Limitations and cautions
Although this study provides “important insight” on the power of refeeding, Wright noted that the findings should be approached with caution, as the study was done on worms and cannot always be translated to humans.
“Additionally, it explains how a process might work in a controlled lab condition rather than real-world eating behaviors,” she added as a limitation. “Finally, the study is short-term and doesn’t give us the long-term translation on lifespan outcomes.”
The review found intermittent fasting was barely more effective than doing nothing, according to the study authors. (iStock)
Wright cautioned that fasting is “not a magic solution for longevity, and how you eat overall matters more than when you eat.”
“I advise, first and foremost, to focus on diet quality, including a variety of fruits and vegetables, healthy fats and minimally processed foods,” she said.
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For those who are considering fasting, it’s better to stick with a moderate plan — like a 12- to 14-hour overnight fast — rather than going to extremes, Wright said. After fasting, she recommends focusing on well-balanced meals.
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Several groups of people should be cautioned against fasting, according to Wright, including those with diabetes who are on insulin or hypoglycemic medications, those who are pregnant or breastfeeding, anyone with a history of eating disorders and older adults at risk of malnutrition.
Anyone considering intermittent fasting should consult with a doctor before starting.
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