Connect with us

Health

Healthier school meal programs helped poorer kids avoid obesity

Published

on

Just how healthy has the introduction of healthier new meals at America’s schools been for kids? A new study ties the policy move to about a half-million fewer obese U.S. children.

The study covered kids aged 10 to 17. It found that after the introduction in 2012-2013 of school meals with less fat and sugar, and more whole grains, the risk of obesity fell by 47 percent among kids from low-income families.

All of that has translated to an estimated 500,000 fewer obese poor American children, according to the research team.

“Students growing up in families with low incomes participate the most in school meals, so it stands to reason that they would benefit the most,” researcher Erica Kenney, an assistant professor of public health nutrition at the Harvard T.H. Chan School of Public Health in Boston, said in a news release from the nonprofit Robert Wood Johnson Foundation, or RWJF.

“These students are also at highest risk for obesity, food insecurity and poor health. Our study shows that the healthier nutrition standards are working as intended for these students,” she said.

In 2010, Congress passed the Healthy, Hunger-Free Kids Act to upgrade nutrition standards for schools, and those standards went into effect in 2012-2013.

Poorer kids were especially impacted, because the new health-oriented policies “included the National School Lunch Program, which affects 30 million students nationwide, and the School Breakfast Program, which affects 14 million students nationwide,” Kenney’s team noted.

Some of the changes included providing “nutritionally adequate meals during the school day” boost the amount of fruits and vegetables in meals while lowering starchy vegetables — such as French fries — serve only fat-free or low-fat milk and increase the amount of whole grains in meals.

Even vending machines were affected: the Smart Snacks program “eliminated most sugary beverages and reduced the sugar and calorie content of food products for sale,” Kenney’s team reported.

But did any of this actually boost kids’ health?

To find out, the Boston team looked at obesity data for kids aged 10 to 17 from the ongoing National Survey of Children’s Health.

Family income seemed key, the study found. Although the healthier food program didn’t affect obesity overall, among children living in poverty, the predicted percentage of children with obesity in 2018 was 21 percent, but without the introduction of healthier school meals and snacks, it would have been 31 percent — a 47 percent reduction, the researchers said.

The authors pointed out that — even among kids — obesity can raise the risk for high blood pressure, type 2 diabetes and heart disease.

Katrina Hartog is clinical nutrition manager at Lenox Hill Hospital in New York City. Reviewing the new data, she agreed that changes to school meals have been a success and “no other legislation was passed that could explain the positive decline in obesity prevalence during this period.”

Kenney’s team warned, however, that Trump administration efforts to roll back Obama-era changes in school nutrition could threaten these advances.

For example, the study authors pointed out that the U.S. Department of Agriculture has sought to rescind parts of the program with moves such as the reintroduction of flavored milk, a weakening of the whole grains requirements and delays on limits on salt in school meals.

The agency has also tried to cut one million kids from free meals programs and allow schools to serve less fruit, fewer whole grains, fewer varieties of vegetables, and more starchy vegetables, such as French fries, Kenney’s group said.

That’s the wrong direction for kids, Hartog believes.

“We ought to be maintaining or strengthening these standards versus weakening them. Healthy children are more likely to develop into healthy adults and continue to pass these habits to future generations,” Hartog said.

According to Jamie Bussel, a senior program officer at the RWJF, “Healthier school meals have been an unqualified success.” She also believes the coronavirus crisis has made it tougher on low-income families to ensure their kids get good nutrition.

“To provide some certainty during the ongoing pandemic, USDA should allow schools to serve free meals to every student during the coming school year — universal free school meals — and Congress should appropriate any necessary additional funding to cover the full cost of all meals served,” Bussel said in the news release.

The report was published July 7 in the journal Health Affairs.

More information

For more on healthy school meals, head to the U.S. Centers for Disease Control and Prevention.

Copyright 2020 HealthDay. All rights reserved.



Source link

Health

Study: Racquet sports make arthritic knees worse for overweight people

Published

on

Stay off the court: For overweight people with arthritic knees, racket sports like tennis and racquetball may accelerate degeneration of the joints, a new study finds.

Exercise can benefit overweight people, but the wrong type might damage knees and lead to the need for knee replacement surgery, the researchers said.

“Fast-paced and high shear load physical activities, such as racket sports, are more harmful for overall knee joint health,” said lead researcher Dr. Silvia Schiro, from the University of California, San Francisco.

Racket sports include frequent and high-intensity lateral movements that can worsen knee osteoarthritis, as opposed to activities that mostly involve forward movements — such as running, an elliptical machine, swimming and bicycling — or forward and diagonal movements, such as ball sports, Schiro said.

“Overweight or obese people may benefit from working out with an elliptical trainer in order to lose weight and engage a healthy lifestyle,” Schiro said.

For the study, Schiro’s team used MRI scans to assess the rate of degeneration of the knee joint in 415 overweight or obese patients who were part of the U.S. Osteoarthritis Initiative.

Participants kept records of different types of physical activity, including ball sports, bicycling, jogging/running, elliptical trainer, racket sports and swimming. The participants were evaluated using the Whole-Organ Magnetic Resonance Imaging Score — “WORMS” — a measure of knee degeneration.

Patients who regularly took part in racket sports saw their WORMS increase significantly, compared with patients who used the elliptical machine, the researchers found.

Surprisingly, the same happened in those participating in racket sports when compared with those who jogged or ran. Those doing racket sports had a significantly greater degeneration in the medial tibial cartilage compartment, which is the area where arthritis often first appears.

Those using the elliptical machine showed the smallest changes in degeneration over the four years of the study.

The faster degeneration of the knee joints in people who participated in racket sports is likely due to the high-speed lateral movements inherent in such sports, Schiro said.

Overweight people who continue to play racket sports might slow degeneration in their knees by switching to sports with less fast-paced and high shear loads like badminton or doubles tennis, the researchers suggested.

Schiro emphasized that the degenerative process is complex and individualized. Some people may be able to safely play these sports, she said. But as a group, overweight and obese people who play racket sports are at higher risk for disease progression.

Knee osteoarthritis, which gradually wears down the cartilage that cushions the ends of the bones, is a major cause of pain and disability, affecting about 14 million Americans, the researchers noted.

Dr. Karen Schneider is an orthopedic surgeon at Lenox Hill Hospital in New York City. She said, “Moderate daily exercise and weight loss for those who are overweight are important in the treatment of knee and hip osteoarthritis.”

Besides improvement in bone density, cardiovascular health and mental well-being, exercise helps decrease joint stiffness associated with osteoarthritis, and improves flexibility and strength, she added.

It may seem counterintuitive that running did not increase the risk of progressive osteoarthritis, but that has been shown in other studies looking at the association of moderate running and osteoarthritis, Schneider said.

“Lower-impact exercises — such as biking, elliptical trainer and swimming — are easier on the joints and often may be preferable to patients with obesity and osteoarthritis,” she said. “For those patients who enjoy tennis, I would encourage them to play doubles on a softer surface and cross-train with other low-impact forms of exercise.”

The findings are scheduled for presentation at the upcoming virtual annual meeting of the Radiological Society of North America. Such research is considered preliminary until published in a peer-reviewed journal.

More information

For more on knee osteoarthritis, head to the American Academy of Orthopaedic Surgeons.

Copyright 2020 HealthDay. All rights reserved.



Source link

Continue Reading

Health

Chinese COVID-19 vaccine said to show promise in early clinical trials

Published

on

Nov. 17 (UPI) — A vaccine against COVID-19 developed in China safely produces antibodies against the virus in 92% of the people who receive it, according to a study published Tuesday by The Lancet Infectious Diseases.

Still, antibody levels among participants receiving the shot, called CoronaVac, were lower than those seen in patients who have recovered following infection, the researchers said.

The trial was not designed to assess the effectiveness of the vaccine, however, and those studies are ongoing, they said.

“Our findings show that CoronaVac is capable of inducing a quick antibody response within four weeks of immunization by giving two doses of the vaccine at a 14-day interval,” study co-author Fengcai Zhu said in a statement.

“We believe that this makes the vaccine suitable for emergency use during the pandemic,” said Zhu, a researcher with the Jiangsu Provincial Center for Disease Control and Prevention in Nanjing, China.

The findings are the latest to fuel hopes that a viable vaccine against COVID-19 will become available in the short-term.

In recent days, both Pfizer and Moderna have released positive, preliminary results with their respective vaccines. More than 120 potential vaccines are being evaluated, and 48 are in clinical trials.

CoronaVac is a chemically inactivated whole virus vaccine based on a strain of the coronavirus that causes COVID-19, originally was isolated from a patient in China.

In this phase 1/2, two-part clinical trial — the first stage of the evaluation process — researchers administered CoronaVac to more than 700 healthy volunteers ages 18 to 59 in China between April 16 and May 5.

No participant had a history of COVID-19 infection, had not traveled to areas with high incidence of the disease and did not have signs of fever at the time the vaccine was administered, the researchers said.

In both parts of the trial, participants were split into two groups to receive one of two vaccination schedules — either two injections 14 days apart or two injections 28 days apart.

Within each of the two groups, participants were randomly assigned to receive either a low dose of the vaccine — 3 micrograms — or a high dose — 6 mcg.

Antibody responses — proteins produced by the immune system to fight off viruses — could be induced within 28 days of the first immunization by giving two doses of the vaccine at the lower dose 14 days apart, the data showed.

In the phase 1 portion of the study, the vaccine produced an immune response in 46% of participants, a figure that more than doubled to just over 92% during the second phase.

The vaccine used in the second phase of the study was produced using a different manufacturing process that may have enabled it to produce a stronger immune response, researchers said.

Participants in all dosing schedules and levels reported similar side effects, with pain at the injection site the most common.

Most of the reported side effects were mild and participants recovered within 48 hours.

CoronaVac can be stored in a standard refrigerator at 36 to 46 degrees Fahrenheit, which is “typical for many existing vaccines including flu,” and can remain in storage for up to three years, according to study co-author Dr. Gang Zeng, of China-based Sinovac Biotech, which makes the vaccine.



Source link

Continue Reading

Health

Buying gun during pandemic may increase suicide risk, study says

Published

on

Those who buy guns as the pandemic rages are more likely to be suicidal than those who already own firearms, a new study finds.

In fact, among people who bought guns during the pandemic, about 70% reported having suicidal thoughts, while just 37% of other gun owners had such thoughts, researchers found.

“People who were motivated to purchase firearms during COVID-19 might have been driven by anxiety that leaves them vulnerable to suicidal ideation,” said researcher Michael Anestis, executive director of the New Jersey Gun Violence Research Center and an associate professor at the Rutgers School of Public Health in Piscataway, N.J.

“While this does not guarantee an increase in suicide rates, it represents an unusually large surge in risk made more troubling by the fact that firearms purchased during COVID-19 may remain in homes beyond the pandemic,” he said in a university news release.

During the first four months of the pandemic, more than 2.5 million Americans bought guns for first time. In March alone, when the pandemic began with a vengeance in the United States, roughly 2 million guns were purchased, Anestis said.

For the study, the researchers surveyed 3,500 Americans. A third of them owned guns.

The researchers found that of those who bought a gun during the pandemic, 70% had suicidal thoughts throughout their lives, 56% had suicidal thoughts during the past year, and 25% had suicidal thoughts during the past month.

Among people who did not buy guns during the pandemic only 56%, 24% and 12%, respectively, had suicidal thoughts during those time periods.

“Firearm owners are usually no more likely than non-firearm owners to experience suicidal thoughts,” Anestis noted. “It is possible that a higher-risk group is driving the current firearm purchasing surge, introducing long-term suicide risk into the homes of individuals who otherwise may not have acquired firearms during a time of extended social isolation, economic uncertainty and general upheaval.”

People who bought a gun during the pandemic also were also less likely to store guns in a secure way, including storing the weapons unloaded or using locking devices.

“The increase in firearm purchases is concerning, given that suicide is three times more likely in homes with firearms, and there is a hundred-fold increase in an individual’s suicide risk immediately following the purchase of a handgun,” Anestis said. “And unsafe firearm storage increases that risk.”

The report was published this week in the American Journal of Preventive Medicine.

More information

For more on guns and suicide, see Harvard University.

Copyright 2020 HealthDay. All rights reserved.



Source link

Continue Reading

Trending