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Looking at lipids
New specialty gets to the heart of the problem by helping to prevent heart attacks and strokes

By CATHY BREITENBUCHER

July 2009

One-third of all deaths in Wisconsin each year are related to cardiovascular disease, and a small, but growing number of physicians, are tackling the problem.

These specialists are known as lipidologists, as they focus on a person’s lipids, or fats in the bloodstream.

"My job as a lipidologist is to prevent you from having a heart attack or stroke," says Dr. Tara Dall, whose clinic in Delafield was recognized in 2007 by the National Lipid Association as the first fully certified lipid clinic in the United States.

"We try to identify things that put people at risk, and intervene in various ways. We can ultimately trump genetics — that’s powerful stuff," says Dall.

Lipidologists see patients who are referred from their primary physicians, who already have had a heart attack or bypass surgery, or who have a family history of heart disease.

"We also see people in their 40s, 50s or 60s who simply are worried about heart disease," says Dr. Donald J. Meyer, a lipidologist and family physician who practices in Cedarburg. "The risk becomes more real when their best friend has had a heart attack."

Identifying those at risk goes beyond the cholesterol and triglyceride screening that has been standard for many years. Advanced lipid testing looks at LDL particles, not merely the level of the LDL, or bad cholesterol in the blood. It costs about $90 and usually is covered by insurance for testing up to six times a year.

A second test is known as CIMT, a specialized ultrasound that examines the thickness of cholesterol deposits in blood vessels of the neck. Insurance usually does not cover the $200 to $300 cost, Dall notes.

The prevailing thought process used to be heart attacks were caused by a buildup of cholesterol plaque in the blood vessel walls — atherosclerosis, or what is commonly called "hardening of the arteries."

According to Meyer, though, the problem comes when the plaque becomes unstable, breaks away and forms a clot. When such a clot blocks blood flow to the heart’s main pumping chamber, the resulting heart attack often is instantly fatal, as in the case of news anchor Tim Russert.

"The treatment is to stabilize the plaque so it has less chance of rupturing, and if possible, to regress it," Meyer says.

Dall and Meyer point to obesity as a major factor in unhealthy cholesterol levels. On a recent vacation at Disney World, Dall says she became alarmed at the number of overweight people she saw. "I was thinking, ‘I wish I could talk to them,’" she adds.

Obesity is a major cause of Type 2 diabetes, which also is dangerous. Meyer says a diagnosis of metabolic syndrome or pre-diabetes fails to convey the seriousness of a patient’s condition.

"The reality of it is it’s like calling a puppy something other than a dog. It’s still going to grow up to be a dog," he explains.

Both local lipidologists are big believers in lifestyle changes to improve one’s cholesterol.

"Even when we identify genetic factors that contribute to weight, absolutely we advise exercise and diet," says Dall. "It’s not about giving a pill to fix a problem."

It’s not just the obese who can have cholesterol problems. Among Dall’s patients are Waukesha’s Olympic gymnastics medalists Paul and Morgan Hamm. Testing revealed that Paul had an elevated lipoprotein particle level.

"It pointed out that no matter how fit you are, you still can have risks," Dall notes.

According to the American Heart Association, heart disease causes more deaths than all forms of cancer combined — about 3,500 deaths a day nationwide. "It’s like 9/11 every day," notes Meyer.

Still, it was just four years ago that the American Board of Clinical Lipidology began to certify doctors. Dall and Meyer are among a handful of Wisconsin physicians who have passed the organization’s certification exam. The National Lipid Association, meanwhile, was formed only seven years ago.

Dall is hopeful that both the health care system and individual patients will begin to take steps to improve the outlook for cholesterol management.

"In a few years, we’ll be doing this advanced testing routinely and identifying risks very early on. I would hope we as a society would become more active," she says. "The key is early detection and prevention. If we wait until people have heart disease, we’re backpedaling."

 


This story ran in the July 2009 issue of: