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Pot Belly a Tip-Off Of Heart Disease

Better to waste food than add it to your waist

August 14, 2007

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Size matters. New research shows that adding several inches to the waist — even if body weight still falls within a normal range — markedly increases the risk of unhealthy plaque build-up in the arteries of the heart and the rest of the body.

The research, conducted at the University of Texas Southwestern Medical Center in Dallas, appears in the August 21, 2007, issue of the Journal of the American College of Cardiology (JACC).

According to the study, the relationship of the waist measurement to the hip measurement was much more closely tied to early, hidden signs of heart disease than other common measures of obesity, such as body mass index (BMI) or the waist circumference alone.

In other words, we may obsess about unsightly cellulite on our hips, but it’s the pot belly we ought to worry about.

“In our thirties and forties, we often gain three to four inches in the midsection,” said James A. de Lemos, M.D., F.A.C.C., a professor of medicine and director of the Coronary Care Unit at the University of Texas Southwestern Medical Center.

“It’s a day-to-day, meal-to-meal battle, but it’s worth fighting. Even a small pot belly puts us at higher risk when compared to a flat tummy.”

For the study, Dr. de Lemos and his colleagues examined data from the ongoing Dallas Heart Study, which is evaluating risk factors for heart disease in a large, multiethnic, urban population with a median age of 45.

The new sub-study focused on a group of 2,744 participants who had noninvasive imaging tests to look for early signs of plaque build-up in the arteries, which signals an increased risk of developing cardiovascular disease later in life.

Electron-beam computed tomography (EBCT) was used to identify calcium deposits in the arteries of the heart. These deposits indicate the onset of so-called hardening of the arteries, and can be detected years before a person experiences chest pain or has a heart attack.

Researchers then examined the relationship between body shape and early signs of arterial disease. They found that the likelihood of calcium being found in the arteries of the heart grew in direct proportion to increases in the waist-to-hip ratio (WHR).

In addition, when they divided the WHR into five groups from smallest to largest, they found that people with the largest WHR were nearly twice as likely to have calcium deposits in their coronary arteries as those with the smallest WHR.

The relationship between WHR and arterial plaque remained strong even after other risk factors, such as blood pressure, diabetes, age, smoking and high cholesterol levels were taken into account.

“Middle-aged spread is not healthy,” Dr. de Lemos said. “We don’t have to clean our plates. It’s better to throw food out than add it to our waists.”

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