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FRIDAY, Oct. 13, 2017 (HealthDay News) -- Almost forty percent adults in the United States are now obese, continuing an ever-expanding epidemic of obesity that's expected to lead to sicker Americans and higher health care costs.
Almost four out of 10 adults and 18.5 percent of kids aged 2 to 19 now meet the clinical definition of obesity, according to a new report from the U.S. Centers for Disease Control and Prevention.
That's up from 30.5 percent of adults and 13.9 percent of children in 1999-2000, the CDC report noted.
"We've made tremendous progress reducing deaths due to cardiovascular disease and stroke in our country. Part of that is due to treatment. Part of that is due to the tremendous reduction in tobacco use," said Dr. Eduardo Sanchez, chief medical officer for the American Heart Association. "But we've worried if obesity trends stayed or worsened that some of those gains might be reduced."
Obesity is defined as a body mass index of 30 or more. A 6-foot-tall man weighing 221 pounds is considered obese, as is a 5-foot-9 woman weighing 203 pounds.
The increase in youth obesity is of particular concern because these children are at greater risk for lifelong health problems, said Dr. Seema Kumar, a childhood obesity specialist with the Mayo Clinic.
"Because rates of obesity are so high, despite all the advances we're seeing, our children may live less healthy and shorter lives than their parents," Kumar said. "We're going to have a much higher number of adults with diabetes, high blood pressure and heart disease down the line."
Some trends within the overall increase in obesity also have health experts worried.
For example, Sanchez noted, obesity appears to be more prevalent in ethnic groups that are growing rapidly in the United States.
About 47 percent of Hispanic and black adults are obese, compared with 38 percent of whites and 13 percent of Asians, the researchers found.
"The demographic profile of our country is shifting in such a way that the burden of obesity will continue to grow unless we address these disparities," Sanchez said. "We're still going to be heading in a challenging direction."
Diana Thomas, a fellow with The Obesity Society, pointed out that the rise in youth obesity also is likely to continue because obese adults tend to mate, reproduce more often, and produce children that also struggle with excess weight.
"That next generation that's coming in with a high prevalence of obesity will probably continue to affect us in the future," said Thomas, who is a professor of mathematical sciences at West Point.
Rates of obesity increase with age, the investigators found. Close to 43 percent of middle-aged adults are obese, compared with about 36 percent of younger adults, nearly 21 percent of teenagers and 14 percent of children aged 2 to 5.
Stemming the obesity epidemic will involve action at both the personal and the community level, Sanchez and Kumar said.
Family-based programs are available that teach young parents how to cook healthy meals, Kumar said. These programs teach healthy eating habits that kids will model once they see their parents setting an example.
"If we can teach our families to eat healthy, that would probably be the most important thing we could do," Kumar said.
Communities also play a crucial role. They can help by adopting policies that encourage a healthy diet and more physical activity, Sanchez suggested. These might include:
- Healthier food and drinks in vending machines in schools and businesses.
- Improving accessibility to healthy foods by promoting farmers' markets.
- Designing neighborhoods to be more walkable and bike-friendly.
- Promoting physical activity for kids both in and outside of school.
"It's not just about giving people information," Sanchez said. "It's about helping individuals and their families adopt different behaviors, and make it easier for them to do so."
The report, by Dr. Craig Hales and colleagues at the National Center for Health Statistics (NCHS), was published in the October issue of the CDC's NCHS Data Brief.
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