Obesity
Parents foster significant misperceptions of children’s weight
Results of a survey presented at the American College of Gastroenterology’s 73rd Annual Scientific Meeting in Orlando revealed that many parents do not accurately perceive their children as overweight or at risk for adulthood obesity. Obesity in the United States is often accompanied by an increased risk of gastrointestinal diseases and has emerged as a major health concern, particularly the issue of obesity among children and adolescents.
Researcher Rona L. Levy, Ph.D. and her colleagues at the University of Washington in Seattle and the University of Minnesota measured parental perceptions of their children’s current weight and perceived risk for developing obesity as an adult.
Forty-six parents of children ages 5 to 9 with a body mass index (BMI) in the 70th percentile or higher were recruited for the study. Child height and weight were measured during a routine pediatric clinic visit. Parents were mailed a series of questionnaires, which included questions on their perception of their child’s current weight, and whether they perceived that their child was at risk for developing obesity as an adult.
Steroids Not as Effective in Obese Asthma Patients
Glucocorticoids, the primary controller medication for asthma, are 40 percent less effective in overweight and obese asthma patients than in those of normal weight, according to researchers at National Jewish Health, in Denver. The study also identified a potential mechanism involved in the resistance, which suggests therapeutic targets for future medications.
The study, by Associate Professor of Medicine E. Rand Sutherland, M.D., M.P.H., and his colleagues at National Jewish Health, appears in the first issue for October of the American Journal of Respiratory and Critical Care Medicine, published by the American Thoracic Society.
“This study identifies what could be a significant issue for the 20 million Americans with asthma; specifically, the main controller medication might be less effective if you are overweight or obese,” said Dr. Sutherland. “These findings should spur doctors to carefully evaluate response to treatment in overweight and obese asthmatics and consider optimizing therapeutic regimens as indicated. We also hope they will spur additional research into the treatment of obese patients with asthma.”
Obese have minimal heartbeat response to stress
Contrary to their expectations, British researchers have found that when exposed to psychological stress, obese people show smaller changes in their heart rate compared with normal-weight individuals.
Dr. Douglas Carroll at the University of Birmingham, and colleagues there and at the University of Glasgow, examined the association between obesity and the magnitude of heart reactions to stress in 1,647 adults living in the community.
Blood pressure and heart rate were measured at rest and in response to psychological stress—performing mental math problems under a time deadline. Measurements were taken when the study began and 5 years later.
Insurers recoup obesity surgery cost in 2-4 years
Insurers recoup the costs of weight-loss surgery within two to four years as obese patients become healthier and have fewer medical problems, researchers said on Wednesday.
The findings show that bariatric surgery, an increasingly popular operation, benefits patients’ health and saves money, according to Pierre-Yves Cremieux of the economic consulting firm Analysis Group and the University of Quebec at Montreal, who led the study.
Bariatric surgery alters the digestive system’s anatomy, reducing the volume of food that can be eaten and digested. The most common form is gastric bypass, which makes the stomach smaller and permits food to bypass part of the small intestine.
Obesity not a red flag for spotting diabetes
Obese people with diabetes are just as likely to go undiagnosed as their slimmer peers with the disease, Harvard Medical School researchers report.
It’s well recognized that obesity increases the likelihood of developing diabetes, yet “obesity does not increase the likelihood that an individual’s diabetes will be diagnosed,” Dr. Christina C. Wee and her colleagues from Harvard and Beth Israel Deaconess Medical Center in Boston report.
There is no consensus on who should be screened for diabetes, Wee and her team note in their report in the medical journal Diabetes Care. Early diagnosis of diabetes is particularly important for obese people, they add, because research shows they are less likely to be offered the preventive care that can help stave off serious complications of the disease.
Health risk behaviors associated with lower prostate specific antigen awareness
According to a study conducted at Columbia University Mailman School of Public Health, health risk behaviors such as smoking and obesity are associated with lower awareness of the Prostate Specific Antigen (PSA), which could lead to a lower likelihood of undergoing actual prostate cancer screening. Although previous studies have explored predictors of PSA test awareness, this is the first research to focus on health risk behaviors, such as smoking, physical inactivity, obesity, and excessive alcohol consumption. The study findings were reported in the August issue of The Journal of Urology.
Awareness of PSA testing is considered an important cognitive precursor of prostate cancer screening and it was found to contribute to differences in prostate cancer screening rates. Earlier studies have suggested that persons who seek out cancer information are more likely to acquire knowledge, demonstrate healthy behaviors, and undergo cancer screening. According to the Mailman School study, a quarter of the men older than 50 years without a history of prostate cancer who were among the population of 7,000 men studied, remain unaware of the PSA test.
“Our primary findings suggested that smoking, physical inactivity and obesity are inversely associated with awareness of the PSA test. These risk behaviors are linked with higher prostate cancer morbidity and mortality,” said Firas S. Ahmed, MD, MPH, Mailman School of Public Health, and first author. This finding may be due to a general lack of concern about health maintenance or less interactions with health care providers by smokers, according to Dr. Ahmed.
“Good” fat may be new weapon in obesity fight
A new understanding of the origins of brown fat cells—the “good” kind of fat that burns energy and keeps us warm—may lead to new treatments for obesity, two research teams reported on Wednesday.
Researchers at the Dana-Farber Cancer Institute in Boston said they used a single molecular switch to turn immature muscle cells into brown fat cells in the lab, suggesting that brown fat may be more akin to muscle cells than conventional white fat cells.
A second team from the Joslin Diabetes Center in Boston, found a protein important for bone growth helped promote the development of brown fat tissue in mice.
Childhood ear infections may predispose to obesity later in life
Researchers are reporting new evidence of a possible link between a history of moderate to severe middle ear infections in childhood and a tendency to be overweight later in life. Their study suggests that prompt diagnosis and treatment of middle ear infections — one of the most common childhood conditions requiring medical attention — may help fight obesity in some people. The findings were presented today at the 236th National Meeting of the American Chemical Society (ACS).
Study leader Linda M. Bartoshuk, Ph.D., noted that chronic, repeated ear infections can damage the chorda tympani nerve, which passes through the middle ear and controls taste sensations. Damage to this nerve appears to intensify the desire for fatty or high-energy foods, which could result in obesity, she said.
Other research has shown that middle ear infections, or otitis media, are becoming more common in children. Childhood obesity is likewise on the rise and has reached epidemic levels, particularly in the United States. Although scientists have known for years that ear infections can lead to hearing loss in children that can result in speech and language impairment, a possible link between ear infections and obesity has been largely unexplored until now, said Bartoshuk, who is with the University of Florida’s Center for Smell and Taste in Gainesville.
Adults who eat eggs for breakfast lose 65 percent more weight
A study published online today in the International Journal of Obesity shows that eating two eggs for breakfast, as part of a reduced-calorie diet, helps overweight adults lose more weight and feel more energetic than those who eat a bagel breakfast of equal calories. [1] This study supports previous research, published in the Journal of the American College of Nutrition, which showed that people who ate eggs for breakfast felt more satisfied and ate fewer calories at the following meal. [2]
“People have a hard time adhering to diets and our research shows that choosing eggs for breakfast can dramatically improve the success of a weight loss plan,” said Nikhil V. Dhurandhar, Ph.D., lead researcher and associate professor in the laboratory of infection and obesity at Pennington Biomedical Research Center, a campus of the Louisiana State University system. “Apparently, the increased satiety and energy due to eggs helps people better comply with a reduced-calorie diet.”
Internet, alcohol and sleep tied to girls’ weight
Girls and young women who devote much time to the Internet, get too little sleep or regularly drink alcohol are more likely than their peers to put on excess weight, a new study suggests.
The researchers, who followed more than 5,000 girls between 14 and 21 years old for 1 year, found that the more spare time girls spent on the Internet, the more their body mass index (BMI) increased.
Similar patterns were seen when the researchers looked at alcohol consumption and sleep. In the latter case, lack of sleep was linked to greater gains in BMI—a measure of weight in relation to height.
Studies refute common stereotypes about obese workers
New research led by a Michigan State University scholar refutes commonly held stereotypes that overweight workers are lazier, more emotionally unstable and harder to get along with than their “normal weight” colleagues.
With the findings, employers are urged to guard against the use of weight-based stereotypes when it comes to hiring, promoting or firing.
Mark Roehling, associate professor of human resource management, and two colleagues studied the relationship between body weight and personality traits for nearly 3,500 adults. Contrary to widely held stereotypes, overweight and obese adults were not found to be significantly less conscientious, less agreeable, less extraverted or less emotionally stable.
Obesity ups a woman’s pancreatic cancer risk: study
Obese women who carry most of their extra weight around the stomach are 70 percent more likely to develop pancreatic cancer, an international team of researchers reported on Tuesday.
The findings suggest are some of the first evidence that the link between obesity and pancreatic cancer is as strong in women as in men, Juhua Luo of Sweden’s Karolinska Institute and colleagues reported in the British Journal of Cancer.
“We found that the risk of developing pancreatic cancer was significantly raised in obese postmenopausal women who carry most of their excess weight around the stomach,” she said in a statement.
Obesity levels in China rising fast, study finds
Obesity levels in China are rising fast, with more than a quarter of the population overweight or obese. As people add more meat and dairy products to their diet, serious health problems can develop, a new study says.
Of all the developing countries, only in Mexico is the rate of increase in becoming overweight among adults faster than in China, the study, published in the July/August issue of the journal Health Affairs, says.
“What’s happening in China should be seen as a marker for what is going to hit the rest of the developing world if we fail to act,” said study author Barry Popkin, a professor of nutrition at the Carolina Population Center at the University of North Carolina.
Population-wide approach needed to curb obesity
A broad range of policy and environmental initiatives at the local, state and federal levels aimed at increasing physical activity and healthful eating is needed to reduce rates of obesity in the United States, according to an American Heart Association (AHA) scientific statement in the Association’s journal Circulation, published Monday.
In an AHA-issued press release, Dr. Shiriki Kumanyika, chair of the working group that wrote the scientific statement “Population-Based Prevention of Obesity,” noted that “almost all of our current eating or activity patterns are those that promote weight gain—using the least possible amount of energy or maximizing quantity rather than quality in terms of food.”
Kumanyika added, “People haven’t just made the decision to eat more and move less; the social structure has played into people’s tendencies to go for convenience foods and labor-saving devices.”
Obese men may have lower hernia risk
Overweight and obese men may be less likely than their thinner counterparts to develop a hernia in the groin, a long-term study suggests.
Researchers found that among nearly 7,500 Swedish men followed for 34 years, the risk of developing a groin hernia declined as the men’s weight increased.
Overall, men who were obese in middle-age were 43 percent less likely than normal-weight men to be diagnosed with the condition over the next three decades.
