The Daily Item, Sunbury, PA

News

August 27, 2012

Fat-Bellied People at Higher Death Risk Than Obese in Study

By Allison Connolly

Bloomberg News.

FRANKFURT, Germany — Normal-weight people with fat bellies have a higher risk of death than the obese, according to data presented Monday at the European Society of Cardiology conference in Munich.

People with a normal body mass index, or BMI, and "central obesity" as defined by a high waist-to-hip ratio had the greatest risk of cardiovascular-related death and the highest death risk overall, researchers said Monday. The risk of cardiovascular death was 2.75 times higher and the risk of death from all causes was 2.08 times higher compared with subjects with normal BMI and a normal waist-to-hip ratio.

"We knew from previous research that central obesity is bad, but what is new in this research is that the distribution of the fat is very important, even in people with a normal weight," Francisco Lopez-Jimenez, senior author of the study and a cardiologist at the Mayo Clinic in Rochester, Minn., said. "This group has the highest death rate, even higher than those who are considered obese based on BMI."

The risk of death may be related to a higher visceral fat accumulation, which is associated with insulin resistance and other risk factors, Karine Sahakyan, a research fellow at the Mayo Clinic who is presenting the results at the meeting, said at a press conference. Risk for fat-bellied subjects may also be connected to a limited amount of "protective" fat on the hips and legs and a relatively limited amount of muscle mass, she said.

The study included 12,785 people representative of the U.S. population with an average age of 44 years where 47.4 percent were male. Over a median of about 14 years there were 2,562 deaths, of which 1,138 were cardiovascular-related, the study said.

BMI, which is calculated using a person's height and weight, is considered normal if it's between 18.5 and 24.9, according to the U.S. National Institutes of Health. A normal waist-to-hip ratio is less than 0.85 for women and less than 0.9 for men, Sahakyan said. The causes of central fat distribution have yet to be determined, she said.

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