Don't pass the Golden Corral without thinking of this story. The Rand Corp. has
found that the percentage of Americans who are at least 100 pounds overweight has grown 50% in just the past five years.
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Back to the study....
From the April 9 Rand news release:
The proportion of Americans who are severely obese — about 100 pounds or more overweight — increased by 50 percent from 2000 to 2005, twice as fast as the growth seen in moderate obesity, according to a RAND Corporation study issued today.
“The proportion of people at the high end of the weight scale continues to increase at a brisk rate despite increased public attention on the risks of obesity and the increased use of drastic weight loss strategies such as bariatric surgery,” said Roland Sturm, author of the report and an economist at RAND, a nonprofit research organization.TK: It used to be that surgery was a radical option, seldom discussed and never advertised. Now bariatric surgery is widely advertised, though its use and success has seemingly not dented the numbers of the severely obese.
The prevalence of severe obesity continues to surge despite a rapid increase in the use of bariatric procedures, which are surgeries that limit the amount of food patients can eat. The number of bariatric surgeries increased from an estimated 13,000 in 1998 to more than 100,000 in 2003. Experts estimate that as many as 200,000 of the procedures were performed in 2006.
To be classified as severely obese, a person must have a body mass index (a ratio of weight to height) of 40 or higher — roughly 100 pounds or more overweight for an average adult man. The typical severely obese man weighs 300 pounds at a height of 5 feet 10 inches tall, while the typical severely obese woman weighs 250 pounds at a height of 5 feet 4 inches.
People with a BMI of 25 to 29 are considered overweight, while a BMI of 30 or more classifies a person as being obese. For a 5-foot-10 inch male, a BMI of 30 translates into being 35 pounds overweight.
Sturm found that from 2000 to 2005, the proportion of Americans with a BMI of 30 or more increased by 24 percent, the proportion of people with a BMI of 40 or more increased by 50 percent and the proportion of Americans with a BMI of 50 or more increased by 75 percent. The heaviest groups have been increasing at the fastest rates for the past 20 years.
Among middle-aged adults, people with a BMI over 40 are expected to have health costs that are double those experienced by normal weight peers, while moderate obesity (a BMI of 30-35) is associated with only a 25 percent increase.
Sturm said the latest findings challenge a common belief held by physicians that people who are obese are a fixed proportion of the population and are not affected by changes in eating and physical activity patterns in the general population.
The study suggests that clinically severe obesity, instead of being a rare pathological condition among genetically vulnerable individuals, is an integral part of the population's weight distribution. As the whole population becomes heavier, the extreme category — the severely obese — increases the fastest.
TK: As the country becomes more obese, the most obese will increase the fastest. That is not a comforting thought as you take the middle seat on the next cross country flight.
The body mass index allows researchers to define obesity and severe obesity over a population of people with varied heights and weights. The index is defined as weight in kilograms divided by the square of height in meters. The standard cut-off point for obesity is a body mass index of 30 or more, corresponding to a person 5 feet 4 inches tall and weighing 174 pounds, or 5 feet 10 inches tall and weighing 209 pounds or more.
The RAND study is based on the Behavioral Risk Factor Surveillance Survey (BRFSS), an annual survey conducted by the U.S. Centers for Disease Control and Prevention. The BRFSS, the world's largest annual telephone survey, tracks health risks in the United States. Height and weight is based on self-reporting. More than 1.5 million respondents were included in the analysis.
TK: Quoted in the Cincinnati Enquirer, Strum said this:
"In our daily lives, we have to make thousands of decisions every day, most of them unconsciously," he said. "If someone puts food in front of you, you're probably going to eat it. Trying to override those automatic decisions is extremely difficult. It can wear you down."
From homes to schools to community centers to corporations, the challenge is to turn the trend line in the opposite direction by conscious thought - the small changes in food offerings and physical environment that, as Sturm said, makes it easier for people to move and eat healthfully and harder for them to be sedentary and overindulge.
TK: It sounds simple: make it easier for people to move and eat healthfully and harder for them to be sedentary and overweight. It may be time to hit us in the pocket book, either with incentives through company insurance plans or junk food taxes. Otherwise the Golden Corral will continue to look like a great bargain.
Labels: 5 a Day, FDA, obesity