( ear to be in nearly as bad a shape as w...)US life expectancy about to decline, researchers say

"The obese may be inadvertently 'saving' Social Security, but the obese themselves and the health care system that cares for them will pay a very heavy price in terms of higher death rates and escalating health care costs."

To estimate the current impact of obesity on life expectancy, the researchers calculated how much longer people would live if obesity did not exist. To do this, they used recently published health statistics and assumed that everyone who is currently obese acquired the body mass index of people who have the lowest risk of death.

By calculating years-of-life-lost due to obesity and combining that with estimates of the prevalence of obesity in younger generations, the authors were able to illustrate that in the coming decades the risk of death from obesity-related causes is about to rise. The hardest hit will be minorities, because of limited access to health care and because they have experienced the most rapid increases in obesity in recent years, according to the authors.

It is well documented that obesity is associated with an increased risk of diabetes, heart disease, cancer and other complications. Obesity and overweight are the second leading cause of preventable death in the United States. And the largest increases in obesity have occurred among children and minorities.

Body weight is affected by many genetic, psychological and environmental factors that influence diet or physical activity levels, says Dr. David Ludwig, associate professor and director of the Obesity Program at Children's Hospital Boston and a co-author of the study. For children in particular, fast food, sugar-sweetened beverages and other high-calorie/low-quality junk foods are major contributors to obesity.

"These adverse changes in diet have been driven by a multi-billion dollar marketing campaign by the food industry aimed at young children," said Ludwig. "C
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Source:University of Illinois at Chicago