U.S.

Cholesterol Gets The Bum's Rush

By CBSNews.com staff CBSNews.com staff

May 15, 2001 / 11:23 AM EDT / CBS

Aggressive new guidelines for doctors treating people at risk for heart disease could nearly triple the number of Americans taking cholesterol-lowering drugs. Deaths from heart disease could be reduced dramatically, experts said.

The new guidelines, unveiled Tuesday, recommend use of different tests to screen for high cholesterol and revise the optimal standards for good and bad cholesterol.

Under the guidelines, the number of Americans using prescribed cholesterol drugs could jump from about 13 million to 36 million, the National Institutes of Health estimated. The number of people prescribed a restricted diet to lower cholesterol would also grow sharply.

Cholesterol and Heart Disease

Your blood cholesterol level has a lot to do with your chances of getting heart disease. High blood cholesterol is one of the major risk factors for heart disease. In fact, the higher your blood cholesterol level, the greater your risk for developing heart disease or having a heart attack. Heart disease is the number one killer of women and men in the United States. Each year, more than a million Americans have heart attacks, and about a half million people die from heart disease.

Click here for information about the risk of heart disease and cholesterol.

"We can now say with certainty that lowering a high blood cholesterol level, specifically high LDL or bad cholesterol, dramatically reduces a person's risk for coronary heart disease," said Dr. Claude Lenfant, director of the National Heat, Lung and Blood Institute.

CBS News Correspondent Byron Pitts reports people suffering from diabetes, high blood pressure and obesity - especially fat around the belt buckle - have been added to the list of those considered at high risk of heart disease.

Along with the new guidelines came old and familiar recommendations for healthier living: less fat in the diet and more exercise.

If the guidelines are followed "and the number of Americans who are appropriately treated goes up, we anticipate that deaths from heart disease will go down and lives will be prolonged," Lenfant said. The U.S. death toll from heart disease is about 500,000 a year.

Dr. James Cleeman, coordinator of the National Cholesterol Education Program, estimated that 33 percent of American adults need lifestyle changes, including a cholesterol-lwering diet.

He said the new guidelines will help identify individuals who are at a high risk for heart attack and recommend intensive cholesterol-lowering treatment with lifestyle changes and, if necessary, drugs.

The guidelines, being published in this week's issue of the Journal of the American Medical Association, also take more note of "good" high-density lipoprotein. Current guidelines list 200 milligrams per deciliter of total cholesterol as the desirable level, over 240 mg as high, and less than 35 mg of HDL as too low.

The new guidelines remain the same for total cholesterol, but add that 100 mg of LDL is optimal for that form. They also add a listing of 130-159 mg of LDL as borderline high, 160 mg as high, 190 mg as very high. The too low reading for the good HDL is raised from 35 mg to 40 mg.

Lenfant said many people don't receive aggressive treatment because they have not been identified as at high risk.

Some 53 million Americans have high cholesterol. Only a small fraction of those with the worst cholesterol levels use prescription medication. Many don't know they have high cholesterol, while others don't have insurance coverage for prescription drugs. Plus, many doctors don't follow current federal prescribing guidelines.

The guidelines call on physicians to make an added effort to identify patients at risk of high cholesterol, including using a test called a lipoprotein profile as a first test for high cholesterol.

Currently the recommended first test is merely a screening for total cholesterol and HDL. The profile breaks that down into total, HDL, LDL and other components.

"The new guidelines will help doctors determine heart attack risk more precisely than was possible before. That allows treatment to be more individualized," said Grundy.

The panel also recommended a new set of "therapeutic lifestyle changes" to help lower cholesterol. These include limiting saturated fats to 7 percent of total calories, increasing intake of soluble fiber and plant stanols, weight reduction and increased physical activity.

Plant stanols are included in certain margarines and salad dressings. Foods high in soluble fiber include legumes, cereal grains, peas, beans and many fruits and vegetables.

Cholesterol has received increasing attention in recent years as it has become more obvious that high levels of this fat are a major risk factor for heart disease.

It can't be eliminated completely, however. Cholesterol is a vital part of the body, a soft, waxy substance found among the fats in every cell. It's used to form cell membranes, some hormones and other needed tissues.

But if there is too much LDL, it can slowly build up in the walls of the arteries feeding the heart and brain, forming a thick, hard deposit that can clog those arteries.

A clot in the region of this plaque can block the flow of blood to part of the heart muscle, causing a heart attack. A clot in the brain causes a stroke.

On the other hnd, HDL tends to carry cholesterol away from the arteries and back to the liver, where it's passed from the body.

The American Heart Association reports that some experts believe HDL removes excess cholesterol from arteries.

Some cholesterol is produced normally in the liver, with additional amounts coming from foods, especially egg yolks, meat, poultry, fish, seafood and whole-milk dairy products.