Childhood obesity may cause asthma

It is more probable that childhood obesity contributes to asthma rather than the other way round, says a study.

Childhood obesity may cause asthma

For years, doctors have known that there is a link between childhood obesity and asthma, but have found it difficult to determine which condition tends to come first, or whether one causes the other.

“The relationship between obesity and asthma in adults, which shows that being overweight and obese can precede the onset of asthma, is supported by a number of studies,” said lead author of the study Perdita Permaul from Massachusetts General Hospital in the US.

“There is not as much evidence for children, but the progression from obesity to asthma, rather than the other way around, seems probable,” Permaul added.

Citing a study that showed that rapid growth in body mass index (BMI) during the first two years of life increased the risk of asthma up to six years of age, the team shows that the onset and duration of obesity and the composition of the excess fat can affect lung function.

“Most kids who suffer from asthma also have allergies,” said Michael Foggs, president, American College of Allergy, Asthma and Immunology (ACAAI).

“These allergic responses in the lung can lead to symptoms of allergy,” Foggs added.

The study appeared in the journal Annals of Allergy, Asthma and Immunology.

Source: times of india


Encouraging healthy diet among toddlers can help curb childhood obesity

A new study has revealed that promoting healthy eating habits from infancy can help prevent childhood obesity and the onset of chronic disease.

Encouraging healthy diet among toddlers

Rebecca Byrne from QUT, said that the toddler years are a critical age in the development of long-term food preferences, but this was also the age that autonomy, independence and food fussiness begins and childhood obesity in Australia has doubled since 1986, with about 21percent of children aged 2-3 years now classified as overweight or obese.

She further added that liking a nutrient-dense diet that incorporates all five food groups was important, as evidence suggested that food preferences develop at this early age and persist into adulthood and iron deficiency also remained an issue for toddlers in both developed and developing countries.

It was also revealed that most toddlers were consuming a diverse diet, the amount and type of meat or meat alternatives was poor. Almost all children were consuming foods we would consider completely unnecessary at this age, such as sweet biscuits.

The study is published in the issue of Australian and New Zealand Journal of Public Health.

Source: ani news


Too posh to push? Beware! C-section boosts child’s risk of obesity

A new study conducted by researchers suggests that babies born by caesarean section are more likely to struggle with obesity later in life.

Not just this, C-sections also boost the odds of certain problems with later pregnancies, including abnormalities in the placenta that can lead to severe bleeding during labour, type-1 diabetes in childhood and other diseases.

Findings of a research conducted at Imperial College London, which include data from 10 countries, suggest babies born through caesarean section were 26 percent more likely to face weight issues during adulthood than those born by vaginal delivery.

Further, the study also showed that average BMI of adults born by caesarean section is around half a unit more than those born by vaginal delivery.

The study was published in the journal PLOS ONE.

Source: Zee news

 


Obesity Is Found to Gain Its Hold in Earliest Years

For many obese adults, the die was cast by the time they were 5 years old. A major new study of more than 7,000 children has found that a third of children who were overweight in kindergarten were obese by eighth grade. And almost every child who was very obese remained that way.

Some obese or overweight kindergartners lost their excess weight, and some children of normal weight got fat over the years. But every year, the chances that a child would slide into or out of being overweight or obese diminished. By age 11, there were few additional changes: Those who were obese or overweight stayed that way, and those whose weight was normal did not become fat.

“The main message is that obesity is established very early in life, and that it basically tracks through adolescence to adulthood,” said Ruth Loos, a professor of preventive medicine at the Icahn School of Medicine at Mount Sinai in New York, who was not involved in the study.

These results, surprising to many experts, arose from a rare study that tracked children’s body weight for years, from kindergarten through eighth grade. Experts say they may reshape approaches to combating the nation’s obesity epidemic, suggesting that efforts must start much earlier and focus more on the children at greatest risk.

The findings, to be published Thursday in The New England Journal of Medicine, do not explain why the effect occurs. Researchers say it may be a combination of genetic predispositions to being heavy and environments that encourage overeating in those prone to it. But the results do provide a possible explanation for why efforts to help children lose weight have often had disappointing results. The steps may have aimed too broadly at all schoolchildren, rather than starting before children enrolled in kindergarten and concentrating on those who were already fat at very young ages.

Previous studies established how many children were fat at each age but not whether their weight changed as they grew up. While valuable in documenting the extent of childhood obesity, they gave an incomplete picture of how the condition developed, researchers said.

“What is striking is the relative decrease in incidence after that initial blast” of obesity that occurs by age 5, said Dr. Jeffrey P. Koplan, the vice president of the Emory Global Health Institute in Atlanta. “It is almost as if, if you can make it to kindergarten without the weight, your chances are immensely better.”

Dr. Koplan, a former director of the Centers for Disease Control and Prevention, was not associated with the new study, although its lead author, Solveig A. Cunningham, is an assistant professor in the School of Public Health at Emory.

The study involved 7,738 children from a nationally representative sample. Researchers measured the children’s height and weight seven times from kindergarten to eighth grade.

When the children entered kindergarten, 12.4 percent were obese — defined as having a body mass index at or above the 95th percentile — and 14.9 percent were overweight, with a B.M.I. at or above the 85th percentile. By eighth grade, 20.8 percent were obese and 17 percent were overweight. Half of the obese kindergartners were obese when they were in eighth grade, and nearly three-quarters of the very obese kindergartners were obese in eighth grade. The risk that fat kindergartners would be obese in eighth grade was four to five times that of their thinner classmates, the study found.

Race, ethnicity and family income mattered in younger children, but by the time the overweight children were 5 years old, those factors no longer affected their risk of being fat in later years.

The study did not track the children before kindergarten, but the researchers had their birth weights. Overweight or obese children often were heavy babies, at least 8.8 pounds, something other studies have also found.

The study’s results, Dr. Koplan and others said, “help focus interventions.”

Most efforts to reduce childhood obesity concentrate on school-age children and apply the steps indiscriminately to all children, fat and thin — improving meals in schools, teaching nutrition and the importance of physical activity, getting rid of soda machines.

“This suggests that maybe one reason it didn’t work so well is that by the time kids are 5, the horse is out of the barn,” said Leann L. Birch, a professor in the department of foods and nutrition at the University of Georgia, who was not involved with the study.

The most rigorous studies of efforts for school-age children, conducted in the 1990s, randomly assigned thousands of children to either participate in intensive programs that encouraged them to exercise and improve their diets, or go on as usual.

One study involved 1,704 third graders in 41 elementary schools in the Southwest, where most of the students were Native Americans, a group that is at high risk for obesity. A second study included 5,106 children in 96 schools in California, Louisiana, Minnesota and Texas.

Neither study found any effect on children’s weights.

Some obesity researchers said the new study following kindergartners over the years also hinted at another factor: the powerful influence of genetics on obesity, something that can be a challenge to overcome.

Source: New York Times

 


USDA allows more meat, grains in school lunches

The Agriculture Department says it’s making permanent rules that allow schools to serve larger portions of lean meat and whole grains in school lunches and other meals.

Guidelines restricting portion size were originally intended to combat childhood obesity, but many parents complained their kids weren’t getting enough to eat. School administrators say that rules establishing maximums on grains and meats are too limiting and make it difficult to plan daily meals.

The department eliminated limits and on meats and grains on a temporary basis more than a year ago. On Thursday officials made the rule change permanent.

The change was announced by Kevin Concannon, an undersecretary for food, nutrition and consumer services.

He says the department has delivered on its promise to give school nutritionists more flexibility in meal planning.

Source: USA Today