Americans' life expectancy already falls more than 20 years behind other developed countries; and with U.S. obesity rates on a steady incline, the years may be further trailing.
Based on researchers' calculations, by the middle of this century the increased risk of diabetes, heart disease and cancer (faced by today's obese youth in particular) could lower the average life expectancy of 77.6 years by as much as five years. That's certainly a far cry from the 2002 Social Security Administration forecast that projected the maximum human life span to reach 100 in roughly six decades. Even more disheartening: The dramatic increase in childhood obesity may have erased anywhere from four to nine months off children's lives already, according to researchers.
Today's Trends, Tomorrow's Reality
Instead of making longevity predictions based on historical trends in death rates, the team of researchers projected future rates by examining today's younger generation. They compared the death rates of obese people to those of healthy weight people. Yet even if the life span calculations made are not perfect, explained one obesity researcher, the emphasis the study places on obesity dangers should serve as an "eye-opener" for policy makers and the public health community.
The current obesity statistics are mind-blowing:
- Two-thirds of America's adults are overweight or obese
- As many as 30 percent of U.S. children are overweight
- Childhood obesity has more than doubled within the past 25 years
- Within the past 20 years, childhood diabetes has increased 10-fold
New England Journal of Medicine, March 17, 2005, Volume 352, Number 11:1138-1145
ABC News March 16, 2005
Nature.com March 17, 2005
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