Posts Tagged ‘BMI’

A new study released this week of over 30 thousand US children found that, on average, kids snack three times a day. What’s more, over half of these children snack 4 times a day. Compared with data from the 1970s which show children consuming over 400 daily calories from snacks, kids today consume nearly 600 daily calories from snack food alone. “My underlying fear is that we’re moving away from being hungry and eating for satiation to just eating,” said Dr. Barry M. Popkin, co-author of the study and director of nutrition epidemiology at the University of North Carolina. Although caloric intake from snacks have increased over time, the average child’s total daily calories have only increased by 113 calories. This means that snack calories have replaced mealtime calories, which is not a good thing since sweet snacks (cookies and cakes) and salty snacks (chips and pretzels) are the top two most consumed categories of snack. [via New York Times]

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In light of First Lady Michelle Obama’s initiative to combat childhood obesity, updated data shows that the rate of childhood obesity has, indeed, not declined. According to the most recent National Health and Nutrition Examination Survey (NHANES 2007-2008), the percentage of obese children, defined by BMI, has remained steady with nearly 17% of children having BMIs above the 95th percentile. This figure is identical to a decade ago when childhood obesity skyrocketed from approximately 5% to 17% between 1980 and 1999. Does this mean that the rate of childhood obesity has plateaued? Are we finally seeing the result of years of effort in attempting to curb childhood obesity? Perhaps, but one thing we know is that the rate has not declined and continued effort is much needed in order to reduce the future health burden obesity can confer on these children. [via Journal Watch Pediatrics and Adolescent Medicine]

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A study published in the latest issue of Morbidity and Mortality Weekly Report, published by the U.S. Centers for Disease Control and Prevention, examines the New York City Department of Education’s 2004 decision to eliminate whole and flavored milk from its schools. The study states the substitution of low-fat and fat-free milk for whole milk in schools can greatly reduce students’ consumption of calories and fat and help combat the childhood obesity epidemic (40% of New York City children are obese by the age of 11).  This simple change means that a milk-drinking student was exposed to 33 fewer calories and 3.4 fewer grams of fat per school day, which is equivalent to 5,960 fewer calories and 619 fewer grams of fat per year. Initially, the consumption of milk by students declined, but by 2009 had increased to 1.3% above the rate at the start of the initiative. But will decreasing caloric intake from milk reduce overall caloric intake and make a dent in the childhood obesity epidemic? It’s a great idea, but there are many more high-calorie foods out there beyond milk to contend with. [via HealthDay]

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Today’s Daily Dose comes from the current issue of Neurology, the medical journal of the American Academy of Neurology. Researchers found, after following over 238 thousand women over the course of 40 years, that women who had a BMI of 30 or greater at the age of 18 had more than twice the risk of developing multiple sclerosis (MS), compared to women with a BMI between 18.5 and 20.9. “Our results suggest that weight during adolescence, rather than childhood or adulthood, is critical in determining the risk of MS,” said study author Kassandra Munger, ScD, of the Harvard School of Public Health. The study authors theorize the link between obesity and MS may be that obese women tend to have lower vitamin D levels (higher vitamin D levels are thought to reduce the risk of MS). In addition, fatty tissue can produce substances thought to affect immune and cellular function which may be associated with MS. [via Medical News Today]

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New research concurrently published by Montreal’s major medical centers in the International Journal of Obesity show that kids who are surrounded by peers and family who are overweight are more likely to misperceive their own weight. “When children’s parents and schoolmates are overweight or obese, their own overweight status may seem normal by comparison. The higher the BMI of their friends and family, the more kids are likely to underestimate their weight – a trend consistent for both sexes, regardless of the socioeconomic levels of their school or family,” said lead author Katerina Maximova. This is an important issue because “Accurately perceiving oneself as overweight or obese is an important cue to take action,” says Jennifer J. McGrath, director of the Pediatric Public Health Psychology Lab at Concordia University. Full story.

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